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ANSI/ASME B16.5/16.47 Flange Dimension

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Dimensions & Weight of ASME B16.5 Slip On Flange - (NPS 1/2 to 24, Class 150)

ASME B16.5 Slip On Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 0.63 1.19 0.88 1 2.38 4 0.63
3/4 3.88 0.50 1.69 0.63 1.50 1.09 2 2.75 4 0.63
1 4.25 0.56 2.00 0.69 1.94 1.36 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 0.81 2.31 1.70 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 0.88 2.56 1.95 3 3.88 4 0.63
2 6.00 0.75 3.63 1.00 3.06 2.44 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 1.13 3.56 2.94 7 5.50 4 0.75
3 7.50 0.94 5.00 1.19 4.25 3.57 8 6.00 4 0.75
3 1/2 8.50 0.94 5.50 1.25 4.81 4.07 11 7.00 8 0.75
4 9.00 0.94 6.19 1.31 5.31 4.57 13 7.50 8 0.75
5 10.00 0.94 7.31 1.44 6.44 5.66 15 8.50 8 0.88
6 11.00 1.00 8.50 1.56 7.56 6.72 19 9.50 8 0.88
8 13.50 1.13 10.63 1.75 9.69 8.72 30 11.75 8 0.88
10 16.00 1.19 12.75 1.94 12.00 10.88 43 14.25 12 1.00
12 19.00 1.25 15.00 2.19 14.38 12.088 64 17.00 12 1.00
14 21.00 1.38 16.25 2.25 15.75 14.14 90 18.75 12 1.13
16 23.50 1.44 18.50 2.50 18.00 16.16 98 21.25 16 1.13
18 25.00 1.56 21.00 2.69 19.88 18.18 130 22.75 16 1.25
20 27.50 1.69 23.00 2.88 22.00 20.20 165 25.00 20 1.25
22 29.50 1.81 25.25 3.13 24.25 22.22 185 27.25 20 1.38
24 32.00 1.88 27.25 3.25 26.13 24.25 220 29.50 20 1.38

Dimensions & Weight of ASME B16.5 Slip On Flange - (NPS 1/2 to 24, Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 1.70 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 1.95 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 2.44 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 2.94 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 3.57 13 6.63 8 0.88
3 1/2 9.00 1.19 5.50 1.75 5.25 4.07 17 7.25 8 0.88
4 10.00 1.25 6.19 1.88 5.75 4.57 22 7.88 8 0.88
5 11.00 1.38 7.31 2.00 7.00 5.66 28 9.25 8 0.88
6 12.50 1.44 8.50 2.06 8.13 6.72 39 10.63 12 0.88
8 15.00 1.63 10.63 2.44 10.25 8.72 58 13.00 12 1.00
10 17.50 1.88 12.75 2.62 12.63 10.88 81 15.25 16 1.13
12 20.50 2.00 15.00 2.88 14.75 12.88 115 17.75 16 1.25
14 23.00 2.13 16.25 3.00 16.75 14.14 165 20.25 20 1.25
16 25.50 2.25 18.50 3.25 19.00 16.16 190 22.50 20 1.38
18 28.00 2.38 21.00 3.50 21.00 18.18 250 24.75 24 1.38
20 30.50 2.50 23.00 3.75 23.13 20.20 315 27.00 24 1.38
22 33.00 2.63 25.25 4.00 25.25 22.22 370 29.25 24 1.63
24 36.00 2.75 27.25 4.19 27.63 24.25 475 32.00 24 1.63

Dimensions & Weight of ASME B16.5 Slip On Flange - (NPS 1/2 to 24, Class 400)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 1.70 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 1.95 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 2.44 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 2.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 3.57 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 4.07 21 7.25 8 1.00
4 10.00 1.38 6.19 2.00 5.75 4.57 26 7.88 8 1.00
5 11.00 1.50 7.31 2.13 7.00 5.66 31 9.25 8 1.00
6 12.50 1.63 8.50 2.25 8.13 6.72 44 10.63 12 1.00
8 15.00 1.88 10.63 2.69 10.25 8.72 67 13.00 12 1.13
10 17.50 2.13 12.75 2.88 12.63 10.88 91 15.25 16 1.25
12 20.50 2.25 15.00 3.13 14.75 12.88 130 17.75 16 1.38
14 23.00 2.38 16.25 3.31 16.75 14.14 180 20.25 20 1.38
16 25.50 2.50 18.50 3.69 19.00 16.16 235 22.50 20 1.50
18 28.00 2.63 21.00 3.88 21.00 18.18 285 24.75 24 1.50
20 30.50 2.75 23.00 4.00 23.13 20.20 345 27.00 24 1.63
22 33.00 2.88 25.25 4.25 25.25 22.22 405 29.25 24 1.75
24 36.00 3.00 27.25 4.50 27.63 24.25 510 32.00 24 1.88

Dimensions & Weight of ASME B16.5 Slip On Flange - (NPS 1/2 to 24, Class 600)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 1.70 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 1.95 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 2.44 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 2.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 3.57 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 4.07 21 7.25 8 1.00
4 10.75 1.50 6.19 2.13 6.00

4.57

 37 8.50 8 1.00
5 13.00 1.75 7.31 2.38 7.44 5.66 63 10.50 8 1.13
6 14.00 1.88 8.50 2.63 8.75 6.72 80 11.50 12 1.13
8 16.50 2.19 10.63 3.00 10.75 8.72 115 13.75 12 1.25
10 20.00 2.50 12.75 3.38 13.50 10.88 170 17.00 16 1.38
12 22.00 2.63 15.00 3.63 15.75 12.88 200 19.25 20 1.38
14 23.75 2.75 16.25 3.69 17.00 14.14 230 20.75 20 1.50
16 27.00 3.00 18.50 4.19 19.50 16.16 330 23.75 20 1.63
18 29.25 3.25 21.00 4.63 21.50 18.18 400 25.75 20 1.75
20 32.00 3.50 23.00 5.00 24.00 20.20 510 28.50 24 1.75
22 34.25 3.75 25.25 5.25 26.25 22.22 590 30.63 24 1.88
24 37.00 4.00 27.25 5.50 28.25 24.25 730 33.00 24 2.00

Dimensions & Weight of ASME B16.5 Slip On Flange - (NPS 1/2 to 24, Class 900)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 0.88 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 1.09 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 1.36 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 1.70 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 1.95 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 2.44 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 2.94 36 7.50 8 1.13
3 9.50 1.50 5.00 2.13 5.00 3.57 26 7.50 8 1.00
4 11.50 1.75 6.19 2.75 6.25 4.57 53 9.25 8 1.25
5 13.75 2.00 7.31 3.13 7.50 5.66 83 11.00 8 1.38
6 15.00 2.19 8.50 3.38 9.25 6.72 110 12.50 12 1.25
8 18.50 2.50 10.63 4.00 11.75 8.72 170 15.50 12 1.50
10 21.50 2.75 12.75 4.25 14.50 10.88 245 18.50 16 1.50
12 24.00 3.13 15.00 4.63 16.50 12.88 325 21.00 20 1.50
14 25.25 3.38 16.25 5.13 17.75 14.14 400 22.00 20 1.63
16 27.75 3.50 18.50 5.25 20.00 16.16 425 24.25 20 1.75
18 31.00 4.00 21.00 6.00 22.25 18.18 600 27.00 20 2.00
20 33.75 4.25 23.00 6.25 24.50 20.20 730 29.50 20 2.13
24 41.00 5.50 27.25 8.00 29.50 24.25 1400 35.50 20 2.63

Dimensions & Weight of ASME B16.5 SORF Flange - (NPS 1/2 to 24, Class 1500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 0.88 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 1.09 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 1.36 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 1.70 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 1.95 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 2.44 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 2.94 36 7.50 8 1.13
3 10.50 1.88 5.00 2.88 5.25 3.57 48 8.00 8 1.25
4 12.25 2.13 6.19 3.56 6.38 4.57 73 9.50 8 1.38
5 14.75 2.88 7.31 4.13 7.75 5.66 130 11.50 8 1.63
6 15.50 3.25 8.50 4.69 9.00 6.72 165 12.50 12 1.50
8 19.00 3.63 10.63 5.63 11.50 8.72 260 15.50 12 1.75
10 23.00 4.25 12.75 6.25 14.50 10.88 435 19.00 12 2.00
12 26.50 4.88 15.00 7.13 17.75 12.88 580 22.50 16 2.13

Dimensions & Weight of ASME B16.5 SORF Flange - (NPS 1/2 to 24, Class 2500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 1.56 1.69 0.88 7 3.50 4 0.88
3/4 5.50 1.25 1.69 1.69 2.00 1.09 8 3.75 4 0.88
1 6.25 1.38 2.00 1.88 2.25 1.36 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 2.06 2.88 1.70 16 5.13 4 1.13
1 1/2 8.00 1.75 2.88 2.38 3.13 1.95 22 5.75 4 1.25
2 9.25 2.00 3.63 2.75 3.75 2.44 38 6.75 8 1.13
2 1/2 10.50 2.25 4.13 3.13 4.50 2.94 55 7.75 8 1.25
3 12.00 2.63 5.00 3.63 5.25 3.57 83 9.00 8 1.38
4 14.00 3.00 6.19 4.25 6.50 4.57 125 10.75 8 1.63
5 16.50 3.63 7.31 5.13 8.00 5.66 210 12.75 8 1.88
6 19.00 4.25 8.50 6.00 9.25 6.72 325 14.50 8 2.13
8 21.75 5.00 10.63 7.00 12.00 8.72 485 17.25 12 2.13
10 26.50 6.50 12.75 9.00 14.75 10.88 930 21.25 12 2.63
12 30.00 7.25 15.00 10.00 17.38 12.88 1100 24.38 12 2.88

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 150)

ASME B16.5 Weld Neck Flange Dimensions and Weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 1.88 0.84 1.19 0.62 2 2.38 4 0.63
3/4 3.88 0.50 1.69 2.06 1.05 1.50 0.82 2 2.75 4 0.63
1 4.25 0.56 2.00 2.19 1.32 1.94 1.05 3 3.13 4 0.63
1 1/4 4.63 0.63 2.50 2.25 1.66 2.31 1.38 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 2.44 1.90 2.56 1.61 4 3.88 4 0.63
2 6.00 0.75 3.63 2.50 2.38 3.06 2.07 6 4.75 4 0.75
2 1/2 7.00 0.88 4.13 2.75 2.88 3.56 2.47 8 5.50 4 0.75
3 7.50 0.94 5.00 2.75 3.50 4.25 3.07 10 6.00 4 0.75
3 1/2 8.50 0.94 5.50 2.81 4.00 4.81 3.55 12 7.00 8 0.75
4 9.00 0.94 6.19 3.00 4.50 5.31 4.03 15 7.50 8 0.75
5 10.00 0.94 7.31 3.50 5.56 6.44 5.05 19 8.50 8 0.88
6 11.00 1.00 8.50 3.50 6.63 7.56 6.07 24 9.50 8 0.88
8 13.50 1.13 10.63 4.00 8.63 9.69 7.98 39 11.75 8 0.88
10 16.00 1.19 12.75 4.00 10.75 12.00 10.02 52 14.25 12 1.00
12 19.00 1.25 15.00 4.50 12.75 14.38 12.00 80 17.00 12 1.00
14 21.00 1.38 16.25 5.00 14.00 15.75 13.25 110 18.75 12 1.13
16 23.50 1.44 18.50 5.00 16.00 18.00 15.25 140 21.25 16 1.13
18 25.00 1.56 21.00 5.50 18.00 19.88 17.25 150 22.75 16 1.25
20 27.50 1.69 23.00 5.69 20.00 22.00 19.25 180 25.00 20 1.25
22 29.50 1.81 25.25 5.88 22.00 24.25 21.25 225 27.25 20 1.38
24 32.00 1.88 27.25 6.00 24.00 26.13 23.25 260 29.50 20 1.38

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 0.84 1.50 0.62 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.05 1.88 0.82 3 3.25 4 0.75
1 4.88 0.69 2.00 2.44 1.32 2.13 1.05 4 3.50 4 0.75
1 1/4 5.25 0.75 2.50 2.56 1.66 2.50 1.38 5 3.88 4 0.75
1 1/2 6.13 0.81 2.88 2.69 1.90 2.75 1.61 7 4.50 4 0.88
2 6.50 0.88 3.63 2.75 2.38 3.31 2.07 9 5.00 8 0.75
2 1/2 7.50 1.00 4.13 3.00 2.88 3.94 2.47 12 5.88 8 0.88
3 8.25 1.13 5.00 3.13 3.50 4.63 3.07 15 6.63 8 0.88
3 1/2 9.00 1.19 5.50 3.19 4.00 5.25 3.55 18 7.25 8 0.88
4 10.00 1.25 6.19 3.38 4.50 5.75 4.03 25 7.88 8 0.88
5 11.00 1.38 7.31 3.88 5.56 7.00 5.05 32 9.25 8 0.88
6 12.50 1.44 8.50 3.88 6.63 8.13 6.07 42 10.63 12 0.88
8 15.00 1.63 10.63 4.38 8.63 10.25 7098 67 13.00 12 1.00
10 17.50 1.88 12.75 4.63 10.75 12.63 10.02 91 15.25 16 1.13
12 20.50 2.00 15.00 5.13 12.75 14.75 12.00 140 17.75 16 1.25
14 23.00 2.13 16.25 5.63 14.00 16.75 13.25 180 20.25 20 1.25
16 25.50 2.25 18.50 5.75 16.00 19.00 15.25 250 22.50 20 1.38
18 28.00 2.38 21.00 6.25 18.00 21.00 17.25 320 24.75 24 1.38
20 30.50 2.50 23.00 6.38 20.00 23.13 19.25 400 27.00 24 1.38
22 33.00 2.63 25.25 6.50 22.00 25.25 21.25 465 29.25 24 1.63
24 36.00 2.75 27.25 6.63 24.00 27.63 23.25 580 32.00 24 1.63

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 400)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 1.50 Specified by purchaser 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.88 Specified by purchaser 4 3.25 4 0.75
1 4.88 0.69 2.00 2.44 2.13 Specified by purchaser 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 2.63 2.50 Specified by purchaser 6 3.88 4 0.75
1 1/2 6.13 0.88 2.88 2.75 2.75 Specified by purchaser 8 4.50 4 0.88
2 6.50 1.00 3.63 2.88 3.31 Specified by purchaser 12 5.00 8 0.75
2 1/2 7.50 1.13 4.13 3.13 3.94 Specified by purchaser 18 5.88 8 0.88
3 8.25 1.25 5.00 3.25 4.63 Specified by purchaser 23 6.63 8 0.88
3 1/2 9.00 1.38 5.50 3.38 5.25 Specified by purchaser 26 7.25 8 1.00
4 10.00 1.38 6.19 3.50 5.75 Specified by purchaser 35 7.88 8 1.00
5 11.00 1.50 7.31 4.00 7.00 Specified by purchaser 43 9.25 8 1.00
6 12.50 1.63 8.50 4.06 8.13 Specified by purchaser 57 10.63 12 1.00
8 15.00 1.88 10.63 4.63 10.25 Specified by purchaser 89 13.00 12 1.13
10 17.50 2.13 12.75 4.88 12.63 Specified by purchaser 125 15.25 16 1.25
12 20.50 2.25 15.00 5.38 14.75 Specified by purchaser 175 17.75 16 1.38
14 23.00 2.38 16.25 5.88 16.75 Specified by purchaser 230 20.25 20 1.38
16 25.50 2.50 18.50 6.00 19.00 Specified by purchaser 295 22.50 20 1.50
18 28.00 2.63 21.00 6.50 21.00 Specified by purchaser 350 24.75 24 1.50
20 30.50 2.75 23.00 6.63 23.13 Specified by purchaser 425 27.00 24 1.63
22 33.00 2.88 25.25 6.75 25.25 Specified by purchaser 505 29.25 24 1.75
24 36.00 3.00 27.25 6.88 27.63 Specified by purchaser 620 32.00 24 1.88

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 600)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 0.84 1.50 Specified by purchaser 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.05 1.88 Specified by purchaser 4 3.25 4 0.75
1 4.88 0.69 2.00 2.44 1.32 2.13 Specified by purchaser 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 2.63 1.66 2.50 Specified by purchaser 6 3.88 4 0.75
1 1/2 6.13 0.88 2.88 2.75 1.90 2.75 Specified by purchaser 8 4.50 4 0.88
2 6.50 1.00 3.63 2.88 2.38 3.31 Specified by purchaser 12 5.00 8 0.75
2 1/2 7.50 1.13 4.13 3.13 2.88 3.94 Specified by purchaser 18 5.88 8 0.88
3 8.25 1.25 5.00 3.25 3.50 4.63 Specified by purchaser 23 6.63 8 0.88
3 1/2 9.00 1.38 5.50 3.38 4.00 5.25 Specified by purchaser 26 7.25 8 1.00
4 10.75 1.50 6.19 4.00 4.50 6.00 Specified by purchaser 42 8.50 8 1.00
5 13.00 1.75 7.31 4.50 5.56 7.44 Specified by purchaser 68 10.50 8 1.13
6 14.00 1.88 8.50 4.63 6.63 8.75 Specified by purchaser 81 11.50 12 1.13
8 16.50 2.19 10.63 5.25 8.63 10.75 Specified by purchaser 120 13.75 12 1.25
10 20.00 2.50 12.75 6.00 10.75 13.50 Specified by purchaser 190 17.00 16 1.38
12 22.00 2.63 15.00 6.13 12.75 15.75 Specified by purchaser 225 19.25 20 1.38
14 23.75 2.75 16.25 6.50 14.00 17.00 Specified by purchaser 280 20.75 20 1.50
16 27.00 3.00 18.50 7.00 16.00 19.50 Specified by purchaser 390 23.75 20 1.63
18 29.25 3.25 21.00 7.25 18.00 21.50 Specified by purchaser 475 25.75 20 1.75
20 32.00 3.50 23.00 7.50 20.00 24.00 Specified by purchaser 590 28.50 24 1.75
22 34.25 3.75 25.25 7.75 22.00 26.25 Specified by purchaser 720 30.63 24 1.88
24 37.00 4.00 27.25 8.00 24.00 28.25 Specified by purchaser 830 33.00 24 2.00

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 900)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 2.38 1.50 Specified by purchaser 5 3.25 4 0.88
3/4 5.13 1.00 1.69 2.75 1.75 Specified by purchaser 6 3.50 4 0.88
1 5.88 1.13 2.00 2.88 2.06 Specified by purchaser 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 2.88 2.50 Specified by purchaser 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 3.25 2.75 Specified by purchaser 13 4.88 4 1.13
2 8.50 1.50 3.63 4.00 4.13 Specified by purchaser 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 4.06 4.88 Specified by purchaser 36 7.50 8 1.13
3 9.50 1.50 5.00 4.00 5.00 Specified by purchaser 31 7.50 8 1.00
4 11.50 1.75 6.19 4.50 6.25 Specified by purchaser 53 9.25 8 1.25
5 13.75 2.00 7.31 5.00 7.50 Specified by purchaser 86 11.00 8 1.38
6 15.00 2.19 8.50 5.50 9.25 Specified by purchaser 110 12.50 12 1.25
8 18.50 2.50 10.63 6.38 11.75 Specified by purchaser 175 15.50 12 1.50
10 21.50 2.75 12.75 7.25 14.50 Specified by purchaser 260 18.50 16 1.50
12 24.00 3.13 15.00 7.88 16.50 Specified by purchaser 325 21.00 20 1.50
14 25.25 3.38 16.25 8.38 17.75 Specified by purchaser 400 22.00 20 1.63
16 27.75 3.50 18.50 8.50 20.00 Specified by purchaser 495 24.25 20 1.75
18 31.00 4.00 21.00 9.00 22.25 Specified by purchaser 680 27.00 20 2.00
20 33.75 4.25 23.00 9.75 24.50 Specified by purchaser 830 29.50 20 2.13
24 41.00 5.50 27.25 11.50 29.50 Specified by purchaser 1500 35.50 20 2.63

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 1500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 2.38 0.84 1.50 Specified by purchaser 5 3.25 4 0.88
3/4 5.13 1.00 1.69 2.75 1.05 1.75 Specified by purchaser 6 3.50 4 0.88
1 5.88 1.13 2.00 2.88 1.32 2.06 Specified by purchaser 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 2.88 1.66 2.50 Specified by purchaser 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 3.25 1.90 2.75 Specified by purchaser 13 4.88 4 1.13
2 8.50 1.50 3.63 4.00 2.38 4.13 Specified by purchaser 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 4.06 2.88 4.88 Specified by purchaser 36 7.50 8 1.13
3 10.50 1.88 5.00 4.63 3.50 5.25 Specified by purchaser 48 8.00 8 1.25
4 12.25 2.13 6.19 4.88 4.50 6.38 Specified by purchaser 73 9.50 8 1.38
5 14.75 2.88 7.31 6.13 5.56 7.75 Specified by purchaser 130 11.50 8 1.63
6 15.50 3.25 8.50 6.75 6.63 9.00 Specified by purchaser 165 12.50 12 1.50
8 19.00 3.63 10.63 8.38 8.63 11.50 Specified by purchaser 275 15.50 12 1.75
10 23.00 4.25 12.75 10.00 10.75 14.50 Specified by purchaser 455 19.00 12 2.00
12 26.50 4.88 15.00 11.13 12.75 17.75 Specified by purchaser 690 22.50 16 2.13
14 29.50 5.25 16.25 11.75 14.00 19.50 Specified by purchaser 940 25.00 16 2.38
16 32.50 5.75 18.50 12.25 16.00 21.75 Specified by purchaser 1250 27.75 16 2.63
18 36.00 6.38 21.00 12.88 18.00 23.50 Specified by purchaser 1625 30.50 16 2.88
20 38.75 7.00 23.00 14.00 20.00 25.25 Specified by purchaser 2050 32.75 16 3.13
24 46.00 8.00 27.25 16.00 24.00 30.00 Specified by purchaser 3325 39.00 16 3.63

Dimensions & Weight of ASME B16.5 Weld Neck Flange - (NPS 1/2 to 24, Class 2500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 2.88 0.84 1.69 Specified by purchaser 7 3.50 4 0.88
3/4 5.50 1.25 1.69 3.13 1.05 2.00 Specified by purchaser 8 3.75 4 0.88
1 6.25 1.38 2.00 3.50 1.32 2.25 Specified by purchaser 12 4.25 4 1.00
1 1/4 7.25 1.50 2.50 3.75 1.66 2.88 Specified by purchaser 17 5.13 4 1.13
1 1/2 8.00 1.75 2.88 4.38 1.90 3.13 Specified by purchaser 25 5.75 4 1.25
2 9.25 2.00 3.63 5.00 2.38 3.75 Specified by purchaser 42 6.75 8 1.13
2 1/2 10.50 2.25 4.13 5.63 2.88 4.50 Specified by purchaser 52 7.75 8 1.25
3 12.00 2.63 5.00 6.63 3.50 5.25 Specified by purchaser 94 9.00 8 1.38
4 14.00 3.00 6.19 7.50 4.50 6.50 Specified by purchaser 145 10.75 8 1.63
5 16.50 3.63 7.31 9.00 5.56 8.00 Specified by purchaser 245 12.75 8 1.88
6 19.00 4.25 8.50 10.75 6.63 9.25 Specified by purchaser 380 14.50 8 2.13
8 21.75 5.00 10.63 12.50 8.63 12.00 Specified by purchaser 580 17.25 12 2.13
10 26.50 6.50 12.75 16.50 10.75 14.75 Specified by purchaser 1075 21.25 12 2.63
12 30.00 7.25 15.00 18.25 12.75 17.38 Specified by purchaser 1525 24.38 12 2.88

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 150)

ASME B16.5 Blind Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 1 2.38 4 0.63
3/4 3.88 0.50 1.69 2 2.75 4 0.63
1 4.25 0.56 2.00 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 4 3.88 4 0.63
2 6.00 0.75 3.63 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 7 5.50 4 0.75
3 7.50 0.94 5.00 9 6.00 4 0.75
3 1/2 8.50 0.94 5.50 13 7.00 8 0.75
4 9.00 0.94 6.19 17 7.50 8 0.75
5 10.00 0.94 7.31 20 8.50 8 0.88
6 11.00 1.00 8.50 26 9.50 8 0.88
8 13.50 1.13 10.63 45 11.75 8 0.88
10 16.00 1.19 12.75 70 14.25 12 1.00
12 19.00 1.25 15.00 110 17.00 12 1.00
14 21.00 1.38 16.25 140 18.75 12 1.13
16 23.50 1.44 18.50 180 21.25 16 1.13
18 25.00 1.56 21.00 220 22.75 16 1.25
20 27.50 1.69 23.00 285 25.00 20 1.25
22 29.50 1.81 25.25 355 27.25 20 1.38
24 32.00 1.88 27.25 430 29.50 20 1.38

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 6 4.50 4 0.88
2 6.50 0.88 3.63 8 5.00 8 0.75
2 1/2 7.50 1.00 4.13 12 5.88 8 0.88
3 8.25 1.13 5.00 16 6.63 8 0.88
3 1/2 9.00 1.19 5.50 21 7.25 8 0.88
4 10.00 1.25 6.19 27 7.88 8 0.88
5 11.00 1.38 7.31 35 9.25 8 0.88
6 12.50 1.44 8.50 50 10.63 12 0.88
8 15.00 1.63 10.63 81 13.00 12 1.00
10 17.50 1.88 12.75 124 15.25 16 1.13
12 20.50 2.00 15.00 185 17.75 16 1.25
14 23.00 2.13 16.25 250 20.25 20 1.25
16 25.50 2.25 18.50 295 22.50 20 1.38
18 28.00 2.38 21.00 395 24.75 24 1.38
20 30.50 2.50 23.00 505 27.00 24 1.38
22 33.00 2.63 25.25 640 29.25 24 1.63
24 36.00 2.75 27.25 790 32.00 24 1.63

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 400)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 8 4.50 4 0.88
2 6.50 1.00 3.63 10 5.00 8 0.75
2 1/2 7.50 1.13 4.13 15 5.88 8 0.88
3 8.25 1.25 5.00 20 6.63 8 0.88
3 1/2 9.00 1.38 5.50 29 7.25 8 1.00
4 10.00 1.38 6.19 33 7.88 8 1.00
5 11.00 1.50 7.31 44 9.25 8 1.00
6 12.50 1.63 8.50 61 10.63 12 1.00
8 15.00 1.88 10.63 100 13.00 12 1.13
10 17.50 2.13 12.75 155 15.25 16 1.25
12 20.50 2.25 15.00 225 17.75 16 1.38
14 23.00 2.38 16.25 290 20.25 20 1.38
16 25.50 2.50 18.50 370 22.50 20 1.50
18 28.00 2.63 21.00 455 24.75 24 1.50
20 30.50 2.75 23.00 587 27.00 24 1.63
22 33.00 2.88 25.25 720 29.25 24 1.75
24 36.00 3.00 27.25 890 32.00 24 1.88

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 600)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 8 4.50 4 0.88
2 6.50 1.00 3.63 10 5.00 8 0.75
2 1/2 7.50 1.13 4.13 15 5.88 8 0.88
3 8.25 1.25 5.00 20 6.63 8 0.88
3 1/2 9.00 1.38 5.50 29 7.25 8 1.00
4 10.75 1.50 6.19 41 8.50 8 1.00
5 13.00 1.75 7.31 68 10.50 8 1.13
6 14.00 1.88 8.50 86 11.50 12 1.13
8 16.50 2.19 10.63 140 13.75 12 1.25
10 20.00 2.50 12.75 230 17.00 16 1.38
12 22.00 2.63 15.00 295 19.25 20 1.38
14 23.75 2.75 16.25 355 20.75 20 1.50
16 27.00 3.00 18.50 495 23.75 20 1.63
18 29.25 3.25 21.00 630 25.75 20 1.75
20 32.00 3.50 23.00 810 28.50 24 1.75
22 34.25 3.75 25.25 1000 30.63 24 1.88
24 37.00 4.00 27.25 1250 33.00 24 2.00

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 900)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 6 3.50 4 0.88
1 5.88 1.13 2.00 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 13 4.88 4 1.13
2 8.50 1.50 3.63 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 35 7.50 8 1.13
3 9.50 1.50 5.00 29 7.50 8 1.00
4 11.50 1.75 6.19 54 9.25 8 1.25
5 13.75 2.00 7.31 87 11.00 8 1.38
6 15.00 2.19 8.50 115 12.50 12 1.25
8 18.50 2.50 10.63 200 15.50 12 1.50
10 21.50 2.75 12.75 290 18.50 16 1.50
12 24.00 3.13 15.00 415 21.00 20 1.50
14 25.25 3.38 16.25 520 22.00 20 1.63
16 27.75 3.50 18.50 600 24.25 20 1.75
18 31.00 4.00 21.00 850 27.00 20 2.00
20 33.75 4.25 23.00 1075 29.50 20 2.13
24 41.00 5.50 27.25 2025 35.50 20 2.63

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 1500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 6 3.50 4 0.88
1 5.88 1.13 2.00 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 13 4.88 4 1.13
2 8.50 1.50 3.63 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 35 7.50 8 1.13
3 10.50 1.88 5.00 48 8.00 8 1.25
4 12.25 2.13 6.19 73 9.50 8 1.38
5 14.75 2.88 7.31 140 11.50 8 1.63
6 15.50 3.25 8.50 160 12.50 12 1.50
8 19.00 3.63 10.63 300 15.50 12 1.75
10 23.00 4.25 12.75 510 19.00 12 2.00
12 26.50 4.88 15.00 690 22.50 16 2.13
14 29.50 5.25 16.25 975 25.00 16 2.38
16 32.50 5.75 18.50 1300 27.75 16 2.63
18 36.00 6.38 21.00 1750 30.50 16 2.88
20 38.75 7.00 23.00 2225 32.75 16 3.13
24 46.00 8.00 27.25 3625 39.00 16 3.63

Dimensions & Weight of ASME B16.5 Blind Flange (NPS 1/2 to 4, Class 2500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 7 3.50 4 0.88
3/4 5.50 1.25 1.69 8 3.75 4 0.88
1 6.25 1.38 2.00 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 17 5.13 4 1.13
1 1/2 8.00 1.75 2.88 23 5.75 4 1.25
2 9.25 2.00 3.63 39 6.75 8 1.13
2 1/2 10.50 2.25 4.13 56 7.75 8 1.25
3 12.00 2.63 5.00 86 9.00 8 1.38
4 14.00 3.00 6.19 135 10.75 8 1.63
5 16.50 3.63 7.31 225 12.75 8 1.88
6 19.00 4.25 8.50 345 14.50 8 2.13
8 21.75 5.00 10.63 530 17.25 12 2.13
10 26.50 6.50 12.75 1025 21.25 12 2.63
12 30.00 7.25 15.00 1300 24.38 12 2.88

Dimensions & Weight of ASME B16.5 Socket-Weld Flange (NPS 1/2 to 4, Class 150)

ASME B16.5 Socket-Weld Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket(D) Approximate Weight (lbs) Bolt Circle (C)
1/2 3.50 0.44 1.38 0.63 1.19 0.62 0.88 0.38 1 2.38
3/4 3.88 0.50 1.69 0.63 1.50 0.82 1.09 0.44 2 2.75
1 4.25 0.56 2.00 0.69 1.94 1.05 1.36 0.50 2 3.13
1 1/4 4.63 0.63 2.50 0.81 2.31 1.38 1.70 0.56 3 3.50
1 1/2 5.00 0.69 2.88 0.88 2.56 1.61 1.95 0.63 3 3.88
2 6.00 0.75 3.63 1.00 3.06 2.07 2.44 0.69 5 4.75
2 1/2 7.00 0.88 4.13 1.13 3.56 2.47 2.94 0.75 7 5.50
3 7.50 0.94 5.00 1.19 4.25 3.07 3.57 0.81 8 6.00
3 1/2 8.50 0.94 5.50 1.25 4.81 3.55 4.07 0.88 11 7.00
4 9.00 0.94 6.19 1.31 5.31 4.03 4.57 0.94 13 7.50
5 10.00 0.94 7.31 1.44 6.44 5.05 5.66 0.94 15 8.50
6 11.00 1.00 8.50 1.56 7.56 6.07 6.72 1.06 19 9.50
8 13.50 1.13 10.63 1.75 9.69 7.98 8.72 1.25 30 11.75
10 16.00 1.19 12.75 1.94 12.00 10.02 10.88 1.31 43 14.25
12 19.00 1.25 15.00 2.19 14.38 12.00 12.088 1.56 64 17.00
14 21.00 1.38 16.25 2.25 15.75 13.25 14.14 1.63 90 18.75
16 23.50 1.44 18.50 2.50 18.00 15.25 16.16 1.75 98 21.25
18 25.00 1.56 21.00 2.69 19.88 17.25 18.18 1.94 130 22.75
20 27.50 1.69 23.00 2.88 22.00 19.25 20.20 2.13 165 25.00
22 29.50 1.81 25.25 3.13 24.25 21.25 22.22 2.38 185 27.25
24 32.00 1.88 27.25 3.25 26.13 23.25 24.25 2.50 220 29.50

Dimensions & Weight of ASME B16.5 Socket-Weld Flange (NPS 1/2 to 4, Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.62 0.88 0.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 0.82 1.09 0.44 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.05 1.36 0.50 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 1.38 1.70 0.56 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 1.61 1.95 0.63 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 2.07 2.44 0.69 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 2.47 2.94 0.75 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 3.07 3.57 0.81 13 6.63 8 0.88

Dimensions & Weight of ASME B16.5 Socket-Weld Flange (NPS 1/2 to 4, Class 600)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 Specified by purchaser 0.88 0.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 Specified by purchaser 1.09 0.44 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 Specified by purchaser 1.36 0.50 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 Specified by purchaser 1.70 0.56 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 Specified by purchaser 1.95 0.63 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 Specified by purchaser 2.44 0.69 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 Specified by purchaser 2.94 0.75 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 Specified by purchaser 3.57 0.81 16 6.63 8 0.88

Dimensions & Weight of ASME B16.5 Socket-Weld Flange (NPS 1/2 to 4, Class 900)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 Specified by purchaser 0.88 0.38 5 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 Specified by purchaser 1.09 0.44 6 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 Specified by purchaser 1.36 0.50 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 Specified by purchaser 1.70 0.56 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 Specified by purchaser 1.95 0.63 13 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 Specified by purchaser 2.44 0.69 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 Specified by purchaser 2.94 0.75 36 7.50 8 1.13

Dimensions & Weight of ASME B16.5 Socket-Weld Flange (NPS 1/2 to 4, Class 1500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 Specified by purchaser 0.88 0.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 Specified by purchaser 1.09 0.44 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 Specified by purchaser 1.36 0.50 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 Specified by purchaser 1.70 0.56 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 Specified by purchaser 1.95 0.63 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 Specified by purchaser 2.44 0.69 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 Specified by purchaser 2.94 0.75 36 7.50 8 1.13

Dimensions & Weight of ASME B16.36 Orifice Flange ( Class 300 - Weld Neck Raised Face)

Class 300 Orifice Flange Dimensions and weights
Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD Welding Neck Length RF Dia. RF Height PCD Orifice Hole dia No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
A B C D E F G H I
1 25 125 36.6 54 33.4 81 50.8 2 88.9 6.4 4 5/8 125 3/4 M16 4.5
1 1/2 40 155 36.6 70 48.3 84 73 2 114.3 6.4 4 3/4 135 7/8 M20 6.5
2 50 165 36.6 84 60.3 84 92.1 2 127 6.4 8 5/8 125 3/4 M16 7
2 1/2 65 190 36.6 100 73 87 104.8 2 149.2 6.4 8 3/4 135 7/8 M20 7.5
3 80 210 36.6 117 88.9 87 127 2 168.3 9.5 8 3/4 135 7/8 M20 9.4
4 100 255 36.6 146 114.3 90 157.2 2 200 12.7 8 3/4 135 7/8 M20 13.2
6 150 320 36.6 206 168.3 98 215.9 2 269.9 12.7 12 3/4 135 7/8 M20 14.6
8 200 380 39.7 260 219.1 110 269.9 2 330.2 12.7 12 7/8 145 1 M24 30
10 250 445 46.1 321 273 116 323.8 2 387.3 12.7 16 1 165 1 1/8 M27 41
12 300 520 49.3 375 323.8 129 381 2 450.8 12.7 16 1 1/8 180 1 1/4 M30 62
14 350 585 52.4 425 355.6 141 412.8 2 514.4 12.7 20 1 1/8 185 1 1/4 M30 84
16 400 650 55.6 483 406.4 144 469.9 2 571.5 12.7 20 1 1/4 195 1 3/8 M33 111
18 450 710 58.8 533 457 157 533.4 2 628.6 12.7 24 1 1/4 205 1 3/8 M33 138
20 500 775 62 587 508 160 584.2 2 685.8 12.7 24 1 1/4 215 1 3/8 M33 171
24 600 915 68.3 702 610 167 692.2 2 812.8 12.7 24 1 1/2 240 1 5/8 M39 247

Dimensions & Weight of ASME B16.36 Orifice Flange ( Class 600 - Weld Neck Raised Face)

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD Welding Neck Length RF Dia. RF Height PCD Orifice Hole dia No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
A B C D E F G H I
1 25 125 36.6 54 33.5 81 50.8 7 88.9 6.4 4 5/8 125 3/4 M16 5.5
1 1/2 40 155 36.6 70 48.3 84 73 7 114.3 6.4 4 3/4 135 7/8 M20 7.8
2 50 165 36.6 84 60.3 84 92.1 7 127 6.4 8 5/8 125 3/4 M16 8.3
2 1/2 65 190 36.6 100 73 87 104.8 7 149.2 6.4 8 3/4 135 7/8 M20 10.8
3 80 210 36.6 117 88.9 87 127 7 168.3 9.5 8 3/4 135 7/8 M20 12.6
4 100 275 38.1 152 114.3 102 157.2 7 215.9 12.7 8 7/8 150 1 M24 19
6 150 355 47.7 222 168.3 117 215.9 7 292.1 12.7 12 1 180 1 1/8 M27 37
8 200 420 55.6 273 219.1 133 269.9 7 349.2 12.7 12 1 1/8 195 1 1/4 M30 53
10 250 510 63.5 343 273 152 323.8 7 431.8 12.7 16 1 1/4 220 1 3/8 M33 86
12 300 560 66.7 400 323.8 156 381 7 489 12.7 20 1 1/4 230 1 3/8 M33 102
14 350 605 69.9 432 355.6 165 412.8 7 527 12.7 20 1 3/8 240 1 1/2 M36 150
16 400 685 76.2 495 406.4 178 469.9 7 603.2 12.7 20 1 1/2 260 1 5/8 M39 190
18 450 745 82.6 546 457.2 184 533.4 7 654 12.7 20 1 5/8 280 1 3/4 M42 240
20 500 815 88.9 610 508 190 584.2 7 723.9 12.7 24 1 5/8 300 1 3/4 M42 295
24 600 940 101.6 718 609.6 203 692.2 7 838.2 12.7 24 1 7/8 335 2 M48 365

Dimensions & Weight of ASME B16.36 Orifice Flange ( Class 900 - Weld Neck Raised Face)

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD Welding Neck Length RF Dia. RF Height PCD Orifice Hole dia No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
A B C D E F G H I
1 25 150 38.1 52 33.5 83 50.8 7 101.6 6.4 4 7/8 150 1 M24 5.4
1 1/2 40 180 38.1 70 48.3 89 73 7 123.8 6.4 4 1 160 1 1/8 M27 7.8
2 50 215 38.1 105 60.3 102 92.1 7 165.1 6.4 8 7/8 150 1 M30 11.5
2 1/2 65 245 41.3 124 73 105 104.8 7 190.5 6.4 8 1 165 1 1/8 M27 15.8
3 80 240 38.1 127 88.9 102 127 7 190.5 9.5 8 7/8 150 1 M24 22
4 100 290 44.5 159 114.3 114 157.2 7 235 12.7 8 1 1/8 180 1 1/4 M30 22
6 150 380 55.6 235 168.3 140 215.9 7 317.5 12.7 12 1 1/8 195 1 1/4 M30 70
8 200 470 63.5 298 219.1 162 269.9 7 393.7 12.7 12 1 3/8 230 1 1/2 M36 119
10 250 545 69.9 368 273 184 323.8 7 469.9 12.7 16 1 3/8 240 1 1/2 M36 204
12 300 610 79.4 419 323.8 200 381 7 533.4 12.7 20 1 3/8 260 1 1/2 M36 303
14 350 640 85.8 451 355.6 213 412.8 7 558.8 12.7 20 1 1/2 280 1 5/8 M39 400
16 400 705 88.9 508 406.4 216 469.9 7 616 12.7 20 1 5/8 290 1 3/4 M42 510
18 450 785 101.9 565 457.2 229 533.4 7 685.8 12.7 20 1 7/8 330 2 M48 738
20 500 855 108 622 508 248 584.2 7 749.3 12.7 20 2 355 2 1/8 M52 932
24 600 1040 139.7 749 609.6 292 692.2 7 901.7 12.7 20 2 1/2 445 2 5/8 M64 1511

Dimensions & Weight of ASME B16.36 Orifice Flange ( Class 1500 - Weld Neck Raised Face)

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD Welding Neck Length RF Dia. RF Height PCD Orifice Hole dia No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
A B C D E F G H I
1 25 150 38.1 52 33.5 83 50.8 7 101.6 6.4 4 7/8 150 1 M24 5.4
1 1/2 40 180 38.1 70 48.3 89 73 7 123.8 6.4 4 1 160 1 1/8 M27 7.8
2 50 215 38.1 105 60.3 102 92.1 7 165.1 6.4 8 7/8 150 1 M24 11.5
2 1/2 65 245 41.3 124 73 105 104.8 7 190.5 6.4 8 1 165 1 1/8 M27 15.8
3 80 265 47.7 133 88.9 117 127 7 203.2 9.5 8 1 1/8 185 1 1/4 M30 22
4 100 310 54 162 114.3 124 157.2 7 241.3 12.7 8 1 1/4 205 1 3/8 M33 22
6 150 395 82.6 229 168.3 171 215.9 7 317.5 12.7 12 1 3/8 265 1 1/2 M36 70
8 200 485 92.1 292 219.1 213 269.9 7 393.7 12.7 12 1 5/8 300 1 3/4 M42 119
10 250 585 108 368 273 254 323.8 7 482.6 12.7 12 1 7/8 345 1 M48 204
12 300 675 123.9 451 323.8 283 381 7 571.5 12.7 16 2 380 2 1/8 M52 303
14 350 750 133.4 495 355.6 298 412.8 7 635 12.7 16 2 1/4 415 2 3/8 M56 400
16 400 825 146.1 552 406.4 311 469.9 7 704.8 12.7 16 2 1/2 450 2 5/8 M64 510
18 450 915 162 597 457.2 327 533.4 7 774.7 12.7 16 2 3/4 500 2 7/8 M72 738
20 500 985 177.8 641 508 356 584.2 7 831.8 12.7 16 3 545 3 1/8 M76 932
24 600 1170 203.2 762 609.6 406 692.2 7 990.6 12.7 16 3 1/2 620 3 5/8 M90 1511

Dimensions & Weight of ASME B16.36 Orifice Flange ( Class 2500 - Weld Neck Raised Face)

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD Welding Neck Length RF Dia. RF Height PCD Orifice Hole dia No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
A B C D E F G H I
1 25 160 38.1 57 33.5 92 50.8 7 108 6.4 4 7/8 150 1 M24 6.5
1 1/2 40 205 44.5 79 48.3 111 73 7 146 6.4 4 1 1/8 180 1 1/4 M30 13
2 50 235 50.8 95 60.3 127 92.1 7 171.4 6.4 8 1 185 1 1/8 M27 19
2 1/2 65 265 57.2 114 73 143 104.8 7 196.8 6.4 8 1 1/8 205 1 1/4 M30 24
3 80 305 66.7 133 88.9 168 127 7 228.6 9.5 8 1 1/4 230 1 3/8 M33 43
4 100 355 76.2 165 114.3 190 157.2 7 273 12.7 8 1 1/2 260 1 5/8 M39 66
6 150 485 108 235 168.3 273 215.9 7 368.3 12.7 8 2 350 2 1/8 M52 172
8 200 550 127 305 219.1 318 269.9 7 438.2 12.7 12 2 385 2 1/8 M52 261
10 250 675 165.1 375 273 419 323.8 7 539.8 12.7 12 2 1/2 490 2 5/8 M64 485
12 300 760 184.2 441 323.8 464 381 7 619.1 12.7 12 2 3/4 540 2 7/8 M72 730

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 150 )

ASME B16.5 Weld Neck RTJ Flange Dimensions and weights
Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 90 9.6 30 21.3 46 N/A N/A 60.3 N/A N/A N/A Welding Neck bore is derived from the pipe schedule
3/4 20 100 11.2 38 26.7 51 N/A N/A 69.9 N/A N/A N/A
1 25 110 12.7 49 33.4 54 63.5 6.35 79.4 47.63 6.35 8.74
1 1/4 32 115 14.3 59 42.2 56 73 6.35 88.9 57.15 6.35 8.74
1 1/2 40 125 15.9 65 48.3 60 82.5 6.35 98.4 65.07 6.35 8.74
2 50 150 17.5 78 60.3 62 102 6.35 120.7 82.55 6.35 8.74
2 1/2 65 180 20.7 90 73 68 121 6.35 139.7 101.6 6.35 8.74
3 80 190 22.3 108 88.9 68 133 6.35 152.4 114.3 6.35 8.74
3 1/2 90 215 22.3 122 101.6 70 154 6.35 177.8 131.78 6.35 8.74
4 100 230 22.3 135 114.3 75 171 6.35 190.5 149.23 6.35 8.74
5 125 255 22.3 164 141.3 87 194 6.35 215.9 171.45 6.35 8.74
6 150 280 23.9 192 168.3 87 219 6.35 241.3 193.68 6.35 8.74
8 200 345 27 246 219.1 100 273 6.35 298.5 247.65 6.35 8.74
10 250 405 28.6 305 273 100 330 6.35 362 304.8 6.35 8.74
12 300 485 30.2 365 323.8 113 406 6.35 431.8 381 6.35 8.74
14 350 535 33.4 400 355.6 125 425 6.35 476.3 396.88 6.35 8.74
16 400 595 35 457 406.4 125 483 6.35 539.8 454.03 6.35 8.74
18 450 635 38.1 505 457.2 138 546 6.35 577.9 517.53 6.35 8.74
20 500 700 41.3 559 508 143 597 6.35 635 558.8 6.35 8.74
24 600 815 46.1 663 610 151 711 6.35 749.3 673.1 6.35 8.74

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 300 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 95 12.7 38 21.3 51 51 5.54 66.7 34.14 5.54 7.14 Welding Neck bore is derived from the pipe schedule
3/4 20 115 14.3 48 26.7 56 63.5 6.35 82.6 42.88 6.35 8.74
1 25 125 15.9 54 33.4 60 70 6.35 88.9 50.8 6.35 8.74
1 1/4 32 135 17.5 64 42.2 64 79.5 6.35 98.4 60.33 6.35 8.74
1 1/2 40 155 19.1 70 48.3 67 90.5 6.35 114.3 68.27 6.35 8.74
2 50 165 20.7 84 60.3 68 108 7.92 127 82.55 7.92 11.91
2 1/2 65 190 23.9 100 73 75 127 7.92 149.2 101.6 7.92 11.91
3 80 210 27 117 88.9 78 146 7.92 168.3 123.83 7.92 11.91
3 1/2 90 230 28.6 133 101.6 79 159 7.92 184.2 131.78 7.92 11.91
4 100 255 30.2 146 114.3 84 175 7.92 200 149.23 7.92 11.91
5 125 280 33.4 178 141.3 97 210 7.92 235 180.98 7.92 11.91
6 150 320 35 206 168.3 97 241 7.92 269.9 211.12 7.92 11.91
8 200 380 39.7 260 219.1 110 302 7.92 330.2 269.88 7.92 11.91
10 250 445 46.1 321 273 116 356 7.92 387.4 323.85 7.92 11.91
12 300 520 49.3 375 323.8 129 413 7.92 450.8 381 7.92 11.91
14 350 585 52.4 425 355.6 141 457 7.92 514.4 419.1 7.92 11.91
16 400 650 55.6 483 406.4 144 508 7.92 571.5 469.9 7.92 11.91
18 450 710 58.8 533 457 157 575 7.92 628.6 533.4 7.92 11.91
20 500 775 62 587 508 160 635 9.53 685.8 584.2 9.53 13.49
24 600 915 68.3 702 610 167 749 11.13 812.8 692.15 11.13 16.66

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 400 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 95 14.3 38 21.3 52 51 5.54 66.7 34.14 5.54 7.14 Welding Neck bore is derived from the pipe schedule
3/4 20 115 15.9 48 26.7 57 63.5 6.35 82.6 42.88 6.35 8.74
1 25 125 17.5 54 33.4 62 70 6.35 88.9 50.8 6.35 8.74
1 1/4 32 135 20.7 64 42.2 67 79.5 6.35 98.4 60.33 6.35 8.74
1 1/2 40 155 22.3 70 48.3 70 90.5 6.35 114.3 68.27 6.35 8.74
2 50 165 25.4 84 60.3 73 108 7.92 127 82.55 7.92 11.9
2 1/2 65 190 28.6 100 73 79 127 7.92 149.2 101.6 7.92 11.9
3 80 210 31.8 117 88.9 83 146 7.92 168.3 123.83 7.92 11.9
3 1/2 90 230 35 133 101.6 86 159 7.92 184.2 131.78 7.92 11.9
4 100 255 35 146 114.3 89 175 7.92 200 149.23 7.92 11.91
5 125 280 38.1 178 141.3 102 210 7.92 235 180.98 7.92 11.91
6 150 320 41.3 206 168.3 103 241 7.92 269.9 211.12 7.92 11.91
8 200 380 47.7 260 219.1 117 302 7.92 330 269.88 7.92 11.91
10 250 445 54 321 273 124 356 7.92 387.4 323.85 7.92 11.91
12 300 520 57.2 375 323.8 137 413 7.92 450.8 381 7.92 11.91
14 350 585 60.4 425 355.6 149 457 7.92 514.4 419.1 7.92 11.91
16 400 650 63.5 483 406.4 152 508 7.92 571.5 469.9 7.92 11.91
18 450 710 66.7 533 457 165 575 7.92 628.6 533.4 7.92 11.91
20 500 775 69.9 587 508 168 635 9.53 685.8 584.2 9.53 13.49
24 600 915 76.2 702 610 175 749 11.13 812.8 692.15 11.13 16.66

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 600 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 95 14.3 38 21.3 52 51 5.54 66.7 34.14 5.54 7.14 Welding Neck bore is derived from the pipe schedule
3/4 20 115 15.9 48 26.7 57 63.5 6.35 82.6 42.88 6.35 8.74
1 25 125 17.5 54 33.4 62 70 6.35 88.9 50.8 6.35 8.74
1 1/4 32 135 20.7 64 42.2 67 79.5 6.35 98.4 60.33 6.35 8.74
1 1/2 40 155 22.3 70 48.3 70 90.5 6.35 114.3 68.27 6.35 8.74
2 50 165 25.4 84 60.3 73 108 7.92 127 82.55 7.92 11.91
2 1/2 65 190 28.6 100 73 79 127 7.92 149.2 101.6 7.92 11.91
3 80 210 31.8 117 88.9 83 146 7.92 168.3 123.83 7.92 11.91
3 1/2 90 230 35 133 101.6 86 159 7.92 184.2 131.78 7.92 11.91
4 100 275 38.1 152 114.3 102 175 7.92 215.9 149.23 7.92 11.91
5 125 330 44.5 189 141.3 114 210 7.92 266.7 180.98 7.92 11.91
6 150 355 47.7 222 168.3 117 241 7.92 292.1 211.12 7.92 11.91
8 200 420 55.6 273 219.1 133 302 7.92 349.2 269.88 7.92 11.91
10 250 510 63.5 343 273 152 356 7.92 431.8 323.85 7.92 11.91
12 300 560 66.7 400 323.8 156 413 7.92 489 381 7.92 11.91
14 350 605 69.9 432 355.6 165 457 7.92 527 419.1 7.92 11.91
16 400 685 76.2 495 406.4 178 508 7.92 603.2 469.9 7.92 11.91
18 450 745 82.6 546 457 184 575 7.92 654 533.4 7.92 11.91
20 500 815 88.9 610 508 190 635 9.53 723.9 584.2 9.53 13.49
24 600 940 101.6 718 610 203 749 11.13 838.2 692.15 11.13 16.66

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 900 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 120 22.3 38 21.3 60 60.5 6.35 82.6 39.67 6.35 8.74 Welding Neck bore is derived from the pipe schedule
3/4 20 130 25.4 44 26.7 70 66.5 6.35 88.9 44.45 6.35 8.74
1 25 150 28.6 52 33.4 73 71.5 6.35 101.6 50.8 6.35 8.74
1 1/4 32 160 28.6 64 42.2 73 81 6.35 111.1 60.33 6.35 8.74
1 1/2 40 180 31.8 70 48.3 83 92 6.35 123.8 68.27 6.35 8.74
2 50 215 38.1 105 60.3 102 124 7.92 165.1 95.25 7.92 11.91
2 1/2 65 245 41.3 124 73 105 137 7.92 190.5 107.95 7.92 11.91
3 80 240 38.1 127 88.9 102 156 7.92 190.5 123.83 7.92 11.91
4 100 290 44.5 159 114.3 114 181 7.92 235 149.23 7.92 11.91
5 125 350 50.8 190 141.3 127 216 7.92 279.4 180.98 7.92 11.91
6 150 380 55.6 235 168.3 140 241 7.92 317.5 211.12 7.92 11.91
8 200 470 63.5 298 219.1 162 308 7.92 393.7 269.88 7.92 11.91
10 250 545 69.9 368 273 184 362 7.92 469.9 323.85 7.92 11.91
12 300 610 79.4 419 323.8 200 419 7.92 533.4 381 7.92 11.91
14 350 640 85.8 451 355.6 213 467 11.13 558.8 419.1 11.13 16.66
16 400 705 88.9 508 406.4 216 524 11.13 616 469.9 11.13 16.66
18 450 785 101.6 565 457 229 594 12.7 685.8 533.4 12.7 19.84
20 500 855 108 622 508 248 648 12.7 749.3 584.2 12.7 19.84
24 600 1040 139.7 749 610 292 772 15.88 901.7 692.15 15.88 26.97

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 1500 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 120 22.3 38 21.3 60 60.5 6.35 82.6 39.67 6.35 8.74 Welding Neck bore is derived from the pipe schedule
3/4 20 130 25.4 44 26.7 70 66.5 6.35 88.9 44.45 6.35 8.74
1 25 150 28.6 52 33.4 73 71.5 6.35 101.6 50.8 6.35 8.74
1 1/4 32 160 28.6 64 42.2 73 81 6.35 111.1 60.33 6.35 8.74
1 1/2 40 180 31.8 70 48.3 83 92 6.35 123.8 68.27 6.35 8.74
2 50 215 38.1 105 60.3 102 124 7.92 165.1 95.25 7.92 11.91
2 1/2 65 245 41.3 124 73 105 137 7.92 190.5 107.95 7.92 11.91
3 80 265 47.7 133 88.9 117 168 7.92 203.2 136.53 7.92 11.91
4 100 310 54 162 114.3 124 194 7.92 241.3 161.93 7.92 11.91
5 125 375 73.1 197 141.3 156 229 7.92 292.1 193.68 7.92 11.91
6 150 395 82.6 229 168.3 171 248 9.53 317.5 211.14 9.53 13.49
8 200 485 92.1 292 219.1 213 318 11.13 393.7 269.88 11.13 16.66
10 250 585 108 368 273 254 371 11.13 482.6 323.85 11.13 16.66
12 300 675 123.9 451 323.8 283 438 14.27 571.5 381 14.27 23.01
14 350 750 133.4 495 355.6 298 489 15.88 635 419.1 15.88 26.97
16 400 825 146.1 552 406.4 311 546 17.48 704.8 469.9 17.48 30.18
18 450 915 162 597 457 327 613 17.48 774.7 533.4 17.48 30.18
20 500 985 177.8 641 508 356 673 17.48 831.8 584.2 17.48 33.32
24 600 1170 203.2 762 610 406 794 20.62 990.6 692.15 20.62 36.53

Dimensions & Weight of ASME B16.5 Weld Neck RTJ Flange ( Class 2500 )

Size in Inch Size in mm Outer Dia. Flange Thickness Hub OD Weld Neck OD Welding Neck Length RTJ RF Dia RTJ RF Height PCD RTJ Pitch dia RTJ Depth RTJ Width Bore
A B C D E F G H I J K L
1/2 15 135 30.2 43 21.3 73 65 6.35 88.9 42.88 6.35 8.74 Welding Neck bore is derived from the pipe schedule
3/4 20 140 31.8 51 26.7 79 73 6.35 95.2 50.8 6.35 8.74
1 25 160 35 57 33.4 89 82.5 6.35 108 60.33 6.35 8.74
1 1/4 32 185 38.1 73 42.2 95 102 7.92 130.2 72.23 7.92 11.91
1 1/2 40 205 44.5 79 48.3 111 114 7.92 146 82.55 7.92 11.91
2 50 235 50.9 95 60.3 127 133 7.92 171.4 101.6 7.92 11.91
2 1/2 65 265 57.2 114 73 143 149 9.53 196.8 111.13 9.52 13.49
3 80 305 66.7 133 88.9 168 168 9.53 228.6 127 9.52 13.49
4 100 355 76.2 165 114.3 190 203 11.13 273 157.18 11.13 16.66
5 125 420 92.1 203 141.3 229 241 12.7 323.8 190.5 12.7 19.84
6 150 485 108 235 168.3 273 279 12.7 368.3 228.6 12.7 19.84
8 200 550 127 305 219.1 318 340 14.27 438.2 279.4 14.27 23.01
10 250 675 165.1 375 273 419 425 17.48 539.8 342.9 17.48 30.18
12 300 760 184.2 441 323.8 464 495 17.48 619.1 406.4 17.48 33.32

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 150).

ASME B16.5 Threaded Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 0.63 1.19 1 2.38 4 0.63
3/4 3.88 0.50 1.69 0.63 1.50 2 2.75 4 0.63
1 4.25 0.56 2.00 0.69 1.94 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 0.81 2.31 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 0.88 2.56 3 3.88 4 0.63
2 6.00 0.75 3.63 1.00 3.06 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 1.13 3.56 7 5.50 4 0.75
3 7.50 0.94 5.00 1.19 4.25 8 6.00 4 0.75
3 1/2 8.50 0.94 5.50 1.25 4.81 11 7.00 8 0.75
4 9.00 0.94 6.19 1.31 5.31 13 7.50 8 0.75
5 10.00 0.94 7.31 1.44 6.44 15 8.50 8 0.88
6 11.00 1.00 8.50 1.56 7.56 19 9.50 8 0.88
8 13.50 1.13 10.63 1.75 9.69 30 11.75 8 0.88
10 16.00 1.19 12.75 1.94 12.00 43 14.25 12 1.00
12 19.00 1.25 15.00 2.19 14.38 64 17.00 12 1.00
14 21.00 1.38 16.25 2.25 15.75 90 18.75 12 1.13
16 23.50 1.44 18.50 2.50 18.00 98 21.25 16 1.13
18 25.00 1.56 21.00 2.69 19.88 130 22.75 16 1.25
20 27.50 1.69 23.00 2.88 22.00 165 25.00 20 1.25
22 29.50 1.81 25.25 3.13 24.25 185 27.25 20 1.38
24 32.00 1.88 27.25 3.25 26.13 220 29.50 20 1.38

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 300).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 13 6.63 8 0.88
3 1/2 9.00 1.19 5.50 1.75 5.25 17 7.25 8 0.88
4 10.00 1.25 6.19 1.88 5.75 22 7.88 8 0.88
5 11.00 1.38 7.31 2.00 7.00 28 9.25 8 0.88
6 12.50 1.44 8.50 2.06 8.13 39 10.63 12 0.88
8 15.00 1.63 10.63 2.44 10.25 58 13.00 12 1.00
10 17.50 1.88 12.75 2.62 12.63 81 15.25 16 1.13
12 20.50 2.00 15.00 2.88 14.75 115 17.75 16 1.25
14 23.00 2.13 16.25 3.00 16.75 165 20.25 20 1.25
16 25.50 2.25 18.50 3.25 19.00 190 22.50 20 1.38
18 28.00 2.38 21.00 3.50 21.00 250 24.75 24 1.38
20 30.50 2.50 23.00 3.75 23.13 315 27.00 24 1.38
22 33.00 2.63 25.25 4.00 25.25 370 29.25 24 1.63
24 36.00 2.75 27.25 4.19 27.63 475 32.00 24 1.63

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 400).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 21 7.25 8 1.00
4 10.00 1.38 6.19 2.00 5.75 26 7.88 8 1.00
5 11.00 1.50 7.31 2.13 7.00 31 9.25 8 1.00
6 12.50 1.63 8.50 2.25 8.13 44 10.63 12 1.00
8 15.00 1.88 10.63 2.69 10.25 67 13.00 12 1.13
10 17.50 2.13 12.75 2.88 12.63 91 15.25 16 1.25
12 20.50 2.25 15.00 3.13 14.75 130 17.75 16 1.38
14 23.00 2.38 16.25 3.31 16.75 180 20.25 20 1.38
16 25.50 2.50 18.50 3.69 19.00 235 22.50 20 1.50
18 28.00 2.63 21.00 3.88 21.00 285 24.75 24 1.50
20 30.50 2.75 23.00 4.00 23.13 345 27.00 24 1.63
22 33.00 2.88 25.25 4.25 25.25 405 29.25 24 1.75
24 36.00 3.00 27.25 4.50 27.63 510 32.00 24 1.88

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 600).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 21 7.25 8 1.00
4 10.75 1.50 6.19 2.13 6.00 37 8.50 8 1.00
5 13.00 1.75 7.31 2.38 7.44 63 10.50 8 1.13
6 14.00 1.88 8.50 2.63 8.75 80 11.50 12 1.13
8 16.50 2.19 10.63 3.00 10.75 115 13.75 12 1.25
10 20.00 2.50 12.75 3.38 13.50 170 17.00 16 1.38
12 22.00 2.63 15.00 3.63 15.75 200 19.25 20 1.38
14 23.75 2.75 16.25 3.69 17.00 230 20.75 20 1.50
16 27.00 3.00 18.50 4.19 19.50 330 23.75 20 1.63
18 29.25 3.25 21.00 4.63 21.50 400 25.75 20 1.75
20 32.00 3.50 23.00 5.00 24.00 510 28.50 24 1.75
22 34.25 3.75 25.25 5.25 26.25 590 30.63 24 1.88
24 37.00 4.00 27.25 5.50 28.25 730 33.00 24 2.00

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 900).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 36 7.50 8 1.13
3 9.50 1.50 5.00 2.13 5.00 26 7.50 8 1.00
4 11.50 1.75 6.19 2.75 6.25 53 9.25 8 1.25
5 13.75 2.00 7.31 3.13 7.50 83 11.00 8 1.38
6 15.00 2.19 8.50 3.38 9.25 110 12.50 12 1.25
8 18.50 2.50 10.63 4.00 11.75 170 15.50 12 1.50
10 21.50 2.75 12.75 4.25 14.50 245 18.50 16 1.50
12 24.00 3.13 15.00 4.63 16.50 325 21.00 20 1.50
14 25.25 3.38 16.25 5.13 17.75 400 22.00 20 1.63
16 27.75 3.50 18.50 5.25 20.00 425 24.25 20 1.75
18 31.00 4.00 21.00 6.00 22.25 600 27.00 20 2.00
20 33.75 4.25 23.00 6.25 24.50 730 29.50 20 2.13
24 41.00 5.50 27.25 8.00 29.50 1400 35.50 20 2.63

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 1500).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 36 7.50 8 1.13
3 10.50 1.88 5.00 2.88 5.25 48 8.00 8 1.25
4 12.25 2.13 6.19 3.56 6.38 73 9.50 8 1.38
5 14.75 2.88 7.31 4.13 7.75 130 11.50 8 1.63
6 15.50 3.25 8.50 4.69 9.00 165 12.50 12 1.50
8 19.00 3.63 10.63 5.63 11.50 260 15.50 12 1.75
10 23.00 4.25 12.75 6.25 14.50 435 19.00 12 2.00
12 26.50 4.88 15.00 7.13 17.75 580 22.50 16 2.13

Dimensions & Weight of ASME B16.5 Threaded Flange (NPS 1/2 to 4, Class 2500).

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 1.56 1.69 7 3.50 4 0.88
3/4 5.50 1.25 1.69 1.69 2.00 8 3.75 4 0.88
1 6.25 1.38 2.00 1.88 2.25 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 2.06 2.88 16 5.13 4 1.13
1 1/2 8.00 1.75 2.88 2.38 3.13 22 5.75 4 1.25
2 9.25 2.00 3.63 2.75 3.75 38 6.75 8 1.13
2 1/2 10.50 2.25 4.13 3.13 4.50 55 7.75 8 1.25
3 12.00 2.63 5.00 3.63 5.25 83 9.00 8 1.38
4 14.00 3.00 6.19 4.25 6.50 125 10.75 8 1.63
5 16.50 3.63 7.31 5.13 8.00 210 12.75 8 1.88
6 19.00 4.25 8.50 6.00 9.25 325 14.50 8 2.13
8 21.75 5.00 10.63 7.00 12.00 485 17.25 12 2.13
10 26.50 6.50 12.75 9.00 14.75 930 21.25 12 2.63
12 30.00 7.25 15.00 10.00 17.38 1100 24.38 12 2.88

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 150)

ASME B16.5 Lap Joint Flange Dimensions and Weights
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (B) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 0.63 1.19 0.13 0.90 1 2.38 4 0.63
3/4 3.88 0.50 0.63 1.50 0.13 1.11 2 2.75 4 0.63
1 4.25 0.56 0.69 1.94 0.13 1.38 2 3.13 4 0.63
1 1/4 4.63 0.63 0.81 2.31 0.19 1.72 3 3.50 4 0.63
1 1/2 5.00 0.69 0.88 2.56 0.25 1.97 3 3.88 4 0.63
2 6.00 0.75 1.00 3.06 0.31 2.46 5 4.75 4 0.75
2 1/2 7.00 0.88 1.13 3.56 0.31 2.97 7 5.50 4 0.75
3 7.50 0.94 1.19 4.25 0.38 3.60 8 6.00 4 0.75
3 1/2 8.50 0.94 1.25 4.81 0.38 4.10 11 7.00 8 0.75
4 9.00 0.94 1.31 5.31 0.44 4.60 13 7.50 8 0.75
5 10.00 0.94 1.44 6.44 0.44 5.69 15 8.50 8 0.88
6 11.00 1.00 1.56 7.56 0.50 6.75 19 9.50 8 0.88
8 13.50 1.13 1.75 9.69 0.50 8.75 30 11.75 8 0.88
10 16.00 1.19 1.94 12.00 0.50 10.92 43 14.25 12 1.00
12 19.00 1.25 2.19 14.38 0.50 12.92 64 17.00 12 1.00
14 21.00 1.38 3.13 15.75 0.50 14.18 105 18.75 12 1.13
16 23.50 1.44 3.44 18.00 0.50 16.19 140 21.25 16 1.13
18 25.00 1.56 2.88 19.88 0.50 18.2 160 22.75 16 1.25
20 27.50 1.69 4.06 22.00 0.50 20.25 195 25.00 20 1.25
22 29.50 1.81 4.25 24.25 0.50 22.25 245 27.25 20 1.38
24 32.00 1.88 4.38 26.13 0.50 24.25 275 29.50 20 1.38

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 0.88 1.50 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.00 1.88 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 1.06 2.13 0.13 1.38 3 3.50 4 0.75
1 1/4 5.25 0.75 1.06 2.50 0.19 1.72 4 3.88 4 0.75
1 1/2 6.13 0.81 1.19 2.75 0.25 1.97 6 4.50 4 0.88
2 6.50 0.88 1.31 3.31 0.31 2.46 7 5.00 8 0.75
2 1/2 7.50 1.00 1.50 3.94 0.31 2.97 10 5.88 8 0.88
3 8.25 1.13 1.69 4.63 0.38 3.60 13 6.63 8 0.88
3 1/2 9.00 1.19 1.75 5.25 0.44 4.10 17 7.25 8 0.88
4 10.00 1.25 1.88 5.75 0.44 4.60 22 7.88 8 0.88
5 11.00 1.38 2.00 7.00 0.44 5.69 28 9.25 8 0.88
6 12.50 1.44 2.06 8.13 0.50 6.75 39 10.63 12 0.88
8 15.00 1.63 2.44 10.25 0.50 8.75 58 13.00 12 1.00
10 17.50 1.88 3.75 12.63 0.50 10.92 91 15.25 16 1.13
12 20.50 2.00 4.00 14.75 0.50 12.92 140 17.75 16 1.25
14 23.00 2.13 4.38 16.75 0.50 14.18 190 20.25 20 1.25
16 25.50 2.25 4.75 19.00 0.50 16.19 250 22.50 20 1.38
18 28.00 2.38 5.13 21.00 0.50 18.20 295 24.75 24 1.38
20 30.50 2.50 5.50 23.13 0.50 20.25 370 27.00 24 1.38
22 33.00 2.63 5.75 25.25 0.50 22.25 435 29.25 24 1.63
24 36.00 2.75 6.00 27.63 0.50 24.25 550 32.00 24 1.63

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 400)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 0.13 1.38 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 0.19 1.72 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 0.25 1.97 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 0.31 2.46 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 0.31 2.97 12 5.88 8 0.88
3 8.25 1.25 5.00 1.81 0.38 3.60 15 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 0.38 4.10 20 7.25 8 1.00
4 10.00 1.38 2.00 5.75 0.44 4.60 25 7.88 8 1.00
5 11.00 1.50 2.13 7.00 0.44 5.69 29 9.25 8 1.00
6 12.50 1.63 2.25 8.13 0.50 6.75 42 10.63 12 1.00
8 15.00 1.88 2.69 10.25 0.50 8.75 64 13.00 12 1.13
10 17.50 2.13 4.00 12.63 0.50 10.92 110 15.25 16 1.25
12 20.50 2.25 4.25 14.75 0.50 12.92 150 17.75 16 1.38
14 23.00 2.38 4.63 16.75 0.50 14.18 205 20.25 20 1.38
16 25.50 2.50 5.00 19.00 0.50 16.19 260 22.50 20 1.50
18 28.00 2.63 5.38 21.00 0.50 18.20 315 24.75 24 1.50
20 30.50 2.75 5.75 23.13 0.50 20.25 385 27.00 24 1.63
22 33.00 2.88 6.00 25.25 0.50 22.25 455 29.25 24 1.75
24 36.00 3.00 6.25 27.63 0.50 24.25 570 32.00 24 1.88

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 600)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 0.88 1.50 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.00 1.88 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 1.06 2.13 0.13 1.38 4 3.50 4 0.75
1 1/4 5.25 0.81 1.13 2.50 0.19 1.72 5 3.88 4 0.75
1 1/2 6.13 0.88 1.25 2.75 0.25 1.97 7 4.50 4 0.88
2 6.50 1.00 1.44 3.31 0.31 2.46 9 5.00 8 0.75
2 1/2 7.50 1.13 1.63 3.94 0.31 2.97 12 5.88 8 0.88
3 8.25 1.25 1.81 4.63 0.38 3.60 15 6.63 8 0.88
3 1/2 9.00 1.38 1.94 5.25 0.38 4.10 20 7.25 8 1.00
4 10.75 1.50 2.13 6.00 0.44 4.60 36 8.50 8 1.00
5 13.00 1.75 2.38 7.44 0.44 5.69 61 10.50 8 1.13
6 14.00 1.88 2.63 8.75 0.50 6.75 78 11.50 12 1.13
8 16.50 2.19 3.00 10.75 0.50 8.75 110 13.75 12 1.25
10 20.00 2.50 4.38 13.50 0.50 10.92 170 17.00 16 1.38
12 22.00 2.63 4.63 15.75 0.50 12.92 200 19.25 20 1.38
14 23.75 2.75 5.00 17.00 0.50 14.18 250 20.75 20 1.50
16 27.00 3.00 5.50 19.50 0.50 16.19 365 23.75 20 1.63
18 29.25 3.25 6.00 21.50 0.50 18.20 435 25.75 20 1.75
20 32.00 3.50 6.50 24.00 0.50 20.25 570 28.50 24 1.75
22 34.25 3.75 6.88 26.25 0.50 22.25 670 30.63 24 1.88
24 37.00 4.00 7.25 28.25 0.50 24.25 810 33.00 24 2.00

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 900)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 0.13 1.50 0.90 4 3.25 4
3/4 5.13 1.00 1.69 1.38 0.13 1.75 1.11 5 3.50 4
1 5.88 1.13 2.00 1.63 0.13 2.06 1.38 8 4.00 4
1 1/4 6.25 1.13 2.50 1.63 0.19 2.50 1.72 9 4.38 4
1 1/2 7.00 1.25 2.88 1.75 0.25 2.75 1.97 12 4.88 4
2 8.50 1.50 3.63 2.25 0.31 4.13 2.46 25 6.50 8
2 1/2 9.63 1.63 4.13 2.50 0.31 4.88 2.97 35 7.50 8
3 9.50 1.50 2.13 5.00 0.38 3.60 25 7.50 8 1.00
4 11.50 1.75 2.75 6.25 0.44 4.60 51 9.25 8 1.25
5 13.75 2.00 3.13 7.50 0.50 5.69 81 11.00 8 1.38
6 15.00 2.19 3.38 9.25 0.50 6.75 105 12.50 12 1.25
8 18.50 2.50 4.50 11.75 0.50 8.75 190 15.50 12 1.50
10 21.50 2.75 5.00 14.50 0.50 10.92 275 18.50 16 1.50
12 24.00 3.13 5.63 16.50 0.50 12.92 370 21.00 20 1.50
14 25.25 3.38 6.13 17.75 0.50 14.18 415 22.00 20 1.63
16 27.75 3.50 6.50 20.00 0.50 16.19 465 24.25 20 1.75
18 31.00 4.00 7.50 22.25 0.50 18.20 650 27.00 20 2.00
20 33.75 4.25 8.25 24.50 0.50 20.25 810 29.50 20 2.13
24 41.00 5.50 10.50 29.50 0.50 24.25 1550 35.50 20 2.63

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 1500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.25 1.50 0.13 0.90 4 3.25 4 0.88
3/4 5.13 1.00 1.38 1.75 0.13 1.11 5 3.50 4 0.88
1 5.88 1.13 1.63 2.06 0.13 1.38 8 4.00 4 1.00
1 1/4 6.25 1.13 1.63 2.50 0.19 1.72 9 4.38 4 1.00
1 1/2 7.00 1.25 1.75 2.75 0.25 1.97 12 4.88 4 1.13
2 8.50 1.50 2.25 4.13 0.31 2.46 25 6.50 8 1.00
2 1/2 9.63 1.63 2.50 4.88 0.31 2.97 35 7.50 8 1.13
3 10.50 1.88 2.88 5.25 0.38 3.60 47 8.00 8 1.25
4 12.25 2.13 3.56 6.38 0.38 4.60 75 9.50 8 1.38
5 14.75 2.88 4.13 7.75 0.44 5.69 140 11.50 8 1.63
6 15.50 3.25 4.69 9.00 0.44 6.75 170 12.50 12 1.50
8 19.00 3.63 5.63 11.50 0.50 8.75 285 15.50 12 1.75
10 23.00 4.25 7.00 14.50 0.50 10.92 485 19.00 12 2.00
12 26.50 4.88 8.63 17.75 0.50 12.92 630 22.50 16 2.13
14 29.50 5.25 9.50 19.50 0.50 14.18 890 25.00 16 2.38
16 32.50 5.75 10.25 21.75 0.50 16.19 1150 27.75 16 2.63
18 36.00 6.38 10.88 23.50 0.50 18.20 1475 30.50 16 2.88
20 38.75 7.00 11.50 25.25 0.50 20.25 1775 32.75 16 3.13
24 46.00 8.00 13.00 30.00 0.50 24.25 2825 39.00 16 3.63

Dimensions & Weight of ASME B16.5 Lap Joint Flange (NPS 1/2 to 4, Class 2500)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.56 1.69 0.13 0.90 7 3.50 4 0.88
3/4 5.50 1.25 1.69 2.00 0.13 1.11 8 3.75 4 0.88
1 6.25 1.38 1.88 2.25 0.13 1.38 11 4.25 4 1.00
1 1/4 7.25 1.50 2.06 2.88 0.19 1.72 16 5.13 4 1.13
1 1/2 8.00 1.75 2.38 3.13 0.25 1.97 22 5.75 4 1.25
2 9.25 2.00 2.75 3.75 0.31 2.46 38 6.75 8 1.13
2 1/2 10.50 2.25 3.13 4.50 0.31 2.97 55 7.75 8 1.25
3 12.00 2.63 3.63 5.25 0.38 3.60 83 9.00 8 1.38
4 14.00 3.00 4.25 6.50 0.38 4.60 125 10.75 8 1.63
5 16.50 3.63 5.13 8.00 0.44 5.69 210 12.75 8 1.88
6 19.00 4.25 6.00 9.25 0.44 6.75 325 14.50 8 2.13
8 21.75 5.00 7.00 12.00 0.50 8.75 485 17.25 12 2.13
10 26.50 6.50 9.00 14.75 0.50 10.92 930 21.25 12 2.63
12 30.00 7.25 10.00 17.38 0.50 12.92 1100 24.38 12 2.88

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 150)

ASME B16.48 Spectacle Blind Flange Dimensions and weights
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 45 16 60 3 38
3/4 54 21 70 3 38
1 64 27 80 3 38
1.1/4 73 42 90 6.4 38
1.1/2 83 48 100 6.4 38
2 102 61 120 6.4 51
2.1/2 107 73 140 6.4 51
3 133 89 150 6.4 64
3.1/2 159 102 175 9.7 64
4 172 114 190 9.7 64
5 194 141 215 9.7 76
6 219 168 240 12.7 76
8 276 219 300 12.7 76
10 337 273 360 15.7 102
12 406 324 430 19.1 102
14 448 356 475 19.1 108
16 511 406 460 22.4 108
18 546 457 580 25.4 114
20 603 508 635 28.4 121
24 714 610 750 31.8 140

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 300)

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 51 16 65 6.4 38
3/4 64 21 80 6.4 38
1 70 27 90 6.4 38
1.1/4 79 42 100 6.4 38
1.1/2 92 48 115 6.4 38
2 108 61 125 9.7 51
2.1/2 127 73 150 9.7 51
3 146 89 170 9.7 64
3.1/2 162 102 185 12.7 64
4 178 114 200 12.7 64
5 213 141 235 15.7 76
6 248 168 270 15.7 76
8 305 219 330 22.4 76
10 359 273 385 25.4 102
12 419 324 450 28.4 102
14 483 356 515 31.8 108
16 536 406 570 38.1 108
18 594 457 630 41.1 114
20 651 508 685 44.5 121
24 772 610 810 50.8 140

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 600)

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 51 16 65 6.4 38
3/4 64 21 80 6.4 38
1 70 27 90 6.4 57
1.1/4 79 37 100 9.7 57
1.1/2 92 43 115 9.7 67
2 108 55 125 9.7 57
2.1/2 127 67 150 12.7 67
3 146 83 170 12.7 67
3.1/2 159 96 185 15.7 76
4 191 108 215 15.7 76
5 238 135 265 19.1 86
6 264 162 290 22.4 86
8 318 212 350 28.4 95
10 397 265 430 35.1 105
12 454 315 490 41.1 105
14 489 346 525 44.5 114
16 562 397 605 50.8 124
18 610 448 655 53.8 133
20 679 497 725 63.5 133
24 787 597 840 73.2 152

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 900)

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 60 16 80 6.4 38
3/4 67 21 90 6.4 41
1 76 27 100 6.4 57
1.1/4 86 37 110 9.7 57
1.1/2 95 43 125 9.7 67
2 140 55 165 12.7 57
2.1/2 162 67 190 12.7 67
3 165 83 190 15.7 67
4 203 108 235 19.1 76
5 244 135 280 22.4 86
6 286 162 320 25.4 86
8 356 212 395 35.1 95
10 432 265 470 41.1 105
12 495 315 535 47.8 105
14 518 346 560 53.8 114
16 572 397 615 60.5 124
18 635 448 685 66.5 133
20 696 497 750 73.2 133
24 835 597 900 88.9 152

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 1500)

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 61 16 80 6.4 38
3/4 67 21 90 9.7 41
1 76 27 100 9.7 64
1.1/4 86 35 110 9.7 64
1.1/2 95 41 125 12.7 70
2 140 53 165 12.7 70
2.1/2 162 63 190 15.7 76
3 172 78 205 19.1 76
4 206 102 240 22.4 89
5 251 128 290 28.4 89
6 279 154 320 35.1 89
8 349 203 395 41.1 102
10 432 255 480 50.8 114
12 518 303 570 60.5 114
14 575 333 635 66.5 127
16 638 381 705 76.2 133
18 702 429 775 85.9 146
20 752 478 830 95.3 152
24 899 575 990 111.3 178

Dimensions & Weight of ASME B16.48 Spectacle Blind Flange (Class 2500)

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 67 16 90 9.7 38
3/4 73 21 95 9.7 41
1 83 27 110 9.7 64
1.1/4 102 35 130 12.7 64
1.1/2 114 41 145 15.7 70
2 143 53 170 15.7 70
2.1/2 165 63 195 19.1 76
3 194 78 230 22.4 76
4 232 102 275 28.4 89
5 276 128 325 35.1 89
6 314 154 370 41.1 89
8 384 198 440 53.8 102
10 473 248 540 66.5 114
12 546 289 620 79.2 114

Dimensions & Weight of Class 150 Paddle Blind Flange (ASME B16.48)

Paddle Blind Flange Dimensions and weights
NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 45 16 126 3 32
3/4 54 21 131 3 32
1 64 27 136 3 32
1¼ 73 42 145 6.4 32
1½ 83 48 145 6.4 32
2 102 61 155 6.4 32
2½ 107 73 170 6.4 32
3 133 89 170 6.4 32
3½ 159 102 202 9.7 38
4 172 114 202 9.7 38
5 194 141 225 9.7 38
6 219 168 225 12.7 38
8 276 219 267 12.7 38
10 337 273 322 15.7 44
12 406 324 357 19.1 44
14 448 356 378 19.1 44
16 511 406 410 22.4 44
18 546 457 427 25.4 51
20 603 508 455 28.4 51
24 714 610 512 31.8 51

Dimensions & Weight of Class 300 Paddle Blind Flange (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1¼ 79 42 150 6.4 32
1½ 92 48 150 6.4 32
2 108 61 158 9.7 32
2½ 127 73 177 9.7 32
3 146 89 177 9.7 32
3½ 162 102 205 12.7 38
4 178 114 205 12.7 38
5 213 141 240 15.7 38
6 248 168 240 15.7 38
8 305 219 281 22.4 38
10 359 273 333 25.4 44
12 419 324 363 28.4 44
14 483 356 395 31.8 44
16 536 406 422 38.1 44
18 594 457 450 41.1 51
20 651 508 480 44.5 51
24 772 610 540 50.8 51

Dimensions & Weight of Class 600 Paddle Blind Flange (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1¼ 79 37 150 9.7 32
1½ 92 43 150 9.7 32
2 108 55 158 9.7 32
2½ 127 67 177 12.7 32
3 146 83 177 12.7 32
3½ 159 96 211 15.7 38
4 191 108 211 15.7 38
5 238 135 248 19.1 38
6 264 162 248 22.4 38
8 318 212 288 28.4 38
10 397 265 352 35.1 44
12 454 315 381 41.1 44
14 489 346 398 44.5 44
16 562 397 435 50.8 44
18 610 448 459 53.8 51
20 679 497 493 63.5 51
24 787 597 547 73.2 51

Dimensions & Weight of Class 900 Paddle Blind Flange (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 60 16 134 6.4 32
3/4 67 21 137 6.4 32
1 76 27 142 6.4 32
1¼ 86 37 151 9.7 32
1½ 95 43 151 9.7 32
2 140 55 174 12.7 32
2½ 162 67 186 12.7 32
3 165 83 186 15.7 32
4 203 108 217 19.1 38
5 244 135 259 22.4 38
6 286 162 259 25.4 38
8 356 212 307 35.1 38
10 432 265 370 41.1 44
12 495 315 401 47.8 44
14 518 346 412 53.8 44
16 572 397 440 60.5 44
18 635 448 471 66.5 51
20 696 497 501 73.2 51
24 835 597 571 88.9 51

Dimensions & Weight of Class 1500 Paddle Blind Flange (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 61 16 135 6.4 32
3/4 67 21 137 9.7 32
1 76 27 142 9.7 32
1¼ 86 35 151 9.7 32
1½ 95 41 151 12.7 32
2 140 53 174 12.7 32
2½ 162 63 190 15.7 32
3 172 78 190 19.1 32
4 206 102 219 22.4 38
5 251 128 256 28.4 38
6 279 154 256 35.1 38
8 349 203 303 41.1 38
10 432 255 370 50.8 44
12 518 303 412 60.5 44
14 575 333 442 66.5 44
16 638 381 472 76.2 44
18 702 429 504 85.9 51
20 752 478 530 95.3 51
24 899 575 603 111.3 51

Dimensions & Weight of Class 2500 Paddle Blind Flange (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
to
End
C		 Thick
ness
T		 Handle
Width
W
1/2 67 16 137 9.7 32
3/4 73 21 140 9.7 32
1 83 27 145 9.7 32
1¼ 102 35 161 12.7 32
1½ 114 41 161 15.7 32
2 143 53 175 15.7 32
2½ 165 63 201 19.1 32
3 194 78 201 22.4 32
4 232 102 232 28.4 38
5 276 128 273 35.1 38
6 314 154 273 41.1 38
8 384 198 321 53.8 38
10 473 248 390 66.5 44
12 546 289 427 79.2 44

Dimensions & Weight of Class 150 Spades and Ring Spacers Flange as per (ASME B16.48)

Spades and Ring Spacers Flange Dimensions and weights
NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 45 16 126 3 32
3/4 54 21 131 3 32
1 64 27 136 3 32
1.1/4 73 42 145 6.4 32
1.1/2 83 48 145 6.4 32
2 102 61 155 6.4 32
2.1/2 107 73 170 6.4 32
3 133 89 170 6.4 32
3.1/2 159 102 202 9.7 38
4 172 114 202 9.7 38
5 194 141 225 9.7 38
6 219 168 225 12.7 38
8 276 219 267 12.7 38
10 337 273 322 15.7 44
12 406 324 357 19.1 44
14 448 356 378 19.1 44
16 511 406 410 22.4 44
18 546 457 427 25.4 51
20 603 508 455 28.4 51
24 714 610 512 31.8 51

Dimensions & Weight of Class 300 Spades and Ring Spacers Flange as per (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1.1/4 79 42 150 6.4 32
1.1/2 92 48 150 6.4 32
2 108 61 158 9.7 32
2.1/2 127 73 177 9.7 32
3 146 89 177 9.7 32
3.1/2 162 102 205 12.7 38
4 178 114 205 12.7 38
5 213 141 240 15.7 38
6 248 168 240 15.7 38
8 305 219 281 22.4 38
10 359 273 333 25.4 44
12 419 324 363 28.4 44
14 483 356 395 31.8 44
16 536 406 422 38.1 44
18 594 457 450 41.1 51
20 651 508 480 44.5 51
24 772 610 540 50.8 51

Dimensions & Weight of Class 600 Spades and Ring Spacers Flange as per (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1.1/4 79 37 150 9.7 32
1.1/2 92 43 150 9.7 32
2 108 55 158 9.7 32
2.1/2 127 67 177 12.7 32
3 146 83 177 12.7 32
3.1/2 159 96 211 15.7 38
4 191 108 211 15.7 38
5 238 135 248 19.1 38
6 264 162 248 22.4 38
8 318 212 288 28.4 38
10 397 265 352 35.1 44
12 454 315 381 41.1 44
14 489 346 398 44.5 44
16 562 397 435 50.8 44
18 610 448 459 53.8 51
20 679 497 493 63.5 51
24 787 597 547 73.2 51

Dimensions & Weight of Class 900 Spades and Ring Spacers Flange as per (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 60 16 134 6.4 32
3/4 67 21 137 6.4 32
1 76 27 142 6.4 32
1.1/4 86 37 151 9.7 32
1.1/2 95 43 151 9.7 32
2 140 55 174 12.7 32
2.1/2 162 67 186 12.7 32
3 165 83 186 15.7 32
4 203 108 217 19.1 38
5 244 135 259 22.4 38
6 286 162 259 25.4 38
8 356 212 307 35.1 38
10 432 265 370 41.1 44
12 495 315 401 47.8 44
14 518 346 412 53.8 44
16 572 397 440 60.5 44
18 635 448 471 66.5 51
20 696 497 501 73.2 51
24 835 597 571 88.9 51

Dimensions & Weight of Class 1500 Spades and Ring Spacers Flange as per (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 61 16 135 6.4 32
3/4 67 21 137 9.7 32
1 76 27 142 9.7 32
1.1/4 86 35 151 9.7 32
1.1/2 95 41 151 12.7 32
2 140 53 174 12.7 32
2.1/2 162 63 190 15.7 32
3 172 78 190 19.1 32
4 206 102 219 22.4 38
5 251 128 256 28.4 38
6 279 154 256 35.1 38
8 349 203 303 41.1 38
10 432 255 370 50.8 44
12 518 303 412 60.5 44
14 575 333 442 66.5 44
16 638 381 472 76.2 44
18 702 429 504 85.9 51
20 752 478 530 95.3 51
24 899 575 603 111.3 51

Dimensions & Weight of Class 2500 Spades and Ring Spacers Flange as per (ASME B16.48)

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 67 16 137 9.7 32
3/4 73 21 140 9.7 32
1 83 27 145 9.7 32
1.1/4 102 35 161 12.7 32
1.1/2 114 41 161 15.7 32
2 143 53 175 15.7 32
2.1/2 165 63 201 19.1 32
3 194 78 201 22.4 32
4 232 102 232 28.4 38
5 276 128 273 35.1 38
6 314 154 273 41.1 38
8 384 198 321 53.8 38
10 473 248 390 66.5 44
12 546 289 427 79.2 44

Dimensions & Weight of Nipoflange asp per ASME B16.5

ASME B16.5 Nipoflange Dimensions and weights
ASME B16.5 Nipoflange Dimensions and weights

Dimensions & Weight of Weldo Flange as per ASME B16.5 (Sch STD)

ASME B16.5 Weldo Flange Dimensions and weights
Size Size in mm Height A OD -B Hole Dia C Weight in KG
1/4 8 14.3 25.4 15.9 0.04
3/8 10 19.05 31.75 19.05 0.07
1/2 15 19.05 34.93 23.81 0.08
3/4 20 22.23 44.45 30.16 0.11
1 25 26.99 53.98 36.51 0.23
1 1/4 32 31.75 65.09 44.45 0.36
1 1/2 40 33.34 73.03 50.8 0.45
2 50 38.1 88.9 65.09 0.79
2 1/2 65 41.28 103.19 76.2 1.13
3 80 44.45 122.24 93.66 1.81
3 1/2 90 47.63 142.88 112.71 2.5
4 100 50.8 152.4 120.65 2.86
5 130 57.15 179.3 141.29 4.65
6 150 60.33 215.9 169.86 6.44
8 200 69.85 263.53 220.66 10.66
10 250 77.79 322.26 274.64 17.69
12 300 85.73 377.83 325.44 26.76
14 350 88.9 409.58 357.19 29.94
16 400 93.6 463.55 407.99 34.02
18 450 96.84 520.7 458.79 44
20 500 101.6 571.5 508 53.52
24 600 144.5 717.5 609.6 101
26 650 155.6 778 660.4 120
30 750 174.6 893.6 762 190
36 900 206.4 1070 914.4 310
40 1000 225.4 1187.6 1016 435
42 1050 235 1244.6 1066.8 540
48 1200 241.3 1404 1219.2 750

Dimensions & Weight of Weldo Flange as per ASME B16.5 (Sch XS)

Size Size in mm Height – A OD – B Hole Dia – C Weight in KG
1/4 8 N/A 25.4 15.88 0.05
3/8 10 N/A 31.75 19.05 0.07
1/2 15 19.05 34.93 23.81 0.09
3/4 20 22.23 44.45 30.16 0.14
1 25 26.99 53.98 36.51 0.21
1 1/4 32 31.75 65.09 44.45 0.41
1 1/2 40 33.34 73.03 50.8 0.5
2 50 38.1 88.9 65.09 0.79
2 1/2 65 41.28 103.19 76.2 1.18
3 80 44.45 122.24 93.66 1.86
3 1/2 90 47.63 136.53 112.71 2.54
4 100 50.8 152.4 120.65 2.9
6 150 77.79 225.43 169.86 10.43
8 200 98.43 292.1 220.66 16.78
10 250 93.66 323.85 265.11 20.87
12 300 103.1 379.41 317.5 27.67
14 350 100.01 431.8 350.84 31.75
16 400 106.36 466.73 403.23 46.27
18 450 111.13 523.88 455.61 58.97
20 500 119.06 582.61 509.59 71.67
24 600 152.4 722.2 609.6 142
26 650 165.1 782.6 660.4 168
30 750 181 896.8 762 218
36 900 212.7 1074.4 914.4 404
40 1000 235 1194 1016 582
42 1050 244.5 1250.8 1066.8 590
48 1200 273 1425.6 1219.2 910

Dimensions & Weight of Weldo Flange as per ASME B16.5 (Sch XXS)

Size Size in mm Height – A OD – B Hole Dia – C Weight in KG
1/2 15 28.58 34.93 14.29 0.11
3/4 20 31.75 44.45 19.05 0.32
1 25 38.1 50.8 25.4 0.38
1 1/4 32 44.45 61.91 33.34 0.57
1 1/2 40 50.8 69.85 38.1 0.79
2 50 55.56 80.96 42.86 0.97
2 1/2 65 61.91 96.84 53.98 1.53
3 80 73.03 120.65 73.03 2.87
4 100 84.14 152.4 98.43 4.76
5 130 93.66 187.33 122.24 6.46
6 150 104.78 220.66 146.05 12.7
8 200 111.12 284.16 173.04 20.41
10 250 125.41 312.74 215.9 38.56

Dimensions & Weight of Weldo Flange as per ASME B16.5 (Sch Sch 160)

Size Size in mm Height – A OD – B Hole Dia – C Weight in KG
1/2 15 28.58 34.93 14.29 0.11
3/4 20 31.75 44.45 19.05 0.32
1 25 38.1 50.8 25.4 0.38
1 1/4 32 44.45 61.91 33.34 0.57
1 1/2 40 50.8 69.85 38.1 0.79
2 50 55.56 80.96 42.86 0.97
2 1/2 65 61.91 96.84 53.98 1.53
3 80 73.03 120.65 73.03 2.87
4 100 84.14 152.4 98.43 4.76
5 130 93.66 187.33 122.24 6.46
6 150 104.78 220.66 146.05 12.7
8 200 111.12 284.16 173.04 20.41
10 250 125.41 312.74 215.9 38.56

Dimensions & Weight of ASME B16.5 Tongue & Groove Flange

Tongue & Groove Flange Dimensions and weights
NPS R S T U W X Y Z
1/2 35.05 18.28 35.05 25.4 36.57 19.81 36.57 23.87
3/4 42.92 23.87 42.92 33.27 44.45 25.4 44.45 31.75
1 50.8 30.22 47.75 38.1 52.32 31.75 49.27 36.57
1¼ 63.5 38.1 57.15 47.75 65.02 39.62 58.67 45.97
1½ 73.15 44.45 63.5 53.84 74.67 45.97 65.02 52.32
2 91.94 57.15 82.55 73.15 93.72 58.67 84.07 71.37
2½ 104.64 68.32 95.25 85.85 106.42 69.85 96.77 84.07
3 127 84.07 117.34 107.95 128.52 85.85 119.12 106.42
3½ 139.7 96.77 130.04 120.65 141.22 98.55 131.82 119.12
4 157.22 109.47 144.52 131.82 158.75 111.25 146.05 130.04
5 185.67 136.65 172.97 160.27 187.45 138.17 174.75 158.75
6 215.9 162.05 203.2 190.5 217.42 163.57 204.72 188.97
8 269.74 212.85 254 238.25 271.52 214.37 255.52 236.47
10 323.85 266.7 304.8 285.75 325.37 268.22 306.32 284.22
12 381 317.5 361.95 342.9 382.52 319.02 363.47 341.37
14 412.75 349.25 393.7 374.65 414.27 350.77 395.22 373.12
16 469.9 400.05 447.54 425.45 471.42 401.57 449.32 423.92
18 533.4 450.85 511.04 488.95 534.92 452.37 512.82 487.42
20 584.2 501.65 558.8 533.4 585.72 503.17 560.32 531.87
24 692.15 603.25 666.75 641.35 693.67 604.77 668.27 639.82

Dimensions & Weight of ASME B16.47 Series A Class 150 Weld Neck Flange

ASME B16.47 Series A Weld Neck Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 34.25 2.69 29.50 4.75 26.62 0.38 26.00 Specified by purchaser 300 31.75 24 1.38
28 36.50 2.81 31.50 4.94 28.62 0.44 28.00 Specified by purchaser 345 34.00 28 1.38
30 38.75 2.94 33.75 5.38 30.75 0.44 30.00 Specified by purchaser 400 36.00 28 1.38
32 41.75 3.19 36.00 5.69 32.75 0.44 32.00 Specified by purchaser 505 38.50 28 1.62
34 43.75 3.25 38.00 5.88 34.75 0.50 34.00 Specified by purchaser 540 40.50 32 1.62
36 46.00 3.56 40.25 6.19 36.75 0.50 36.00 Specified by purchaser 640 42.75 32 1.62
38 48.75 3.44 42.25 6.19 39.00 0.50 38.00 Specified by purchaser 720 45.25 32 1.62
40 50.75 3.56 44.25 6.44 41.00 0.50 40.00 Specified by purchaser 775 47.25 36 1.62
42 53.00 3.81 47.00 6.75 43.00 0.50 42.00 Specified by purchaser 890 49.50 36 1.62
44 55.25 4.00 49.00 7.00 45.00 0.50 44.00 Specified by purchaser 990 51.75 40 1.62
46 57.25 4.06 51.00 7.31 47.12 0.50 46.00 Specified by purchaser 1060 53.75 40 1.62
48 59.50 4.25 53.50 7.56 49.12 0.50 48.00 Specified by purchaser 1185 56.00 44 1.62
50 61.75 4.38 55.50 8.00 51.25 0.50 50.00 Specified by purchaser 1270 58.25 44 1.88
52 64.00 4.56 57.50 8.25 53.25 0.50 52.00 Specified by purchaser 1410 60.50 44 1.88
54 66.25 4.75 59.50 8.50 55.25 0.50 54.00 Specified by purchaser 1585 62.75 44 1.88
56 68.75 4.88 62.00 9.00 57.38 0.50 56.00 Specified by purchaser 1760 65.00 48 1.88
58 71.00 5.06 64.00 9.25 59.38 0.50 58.00 Specified by purchaser 1915 67.25 48 1.88
60 73.00 5.19 66.00 9.44 61.38 0.50 60.00 Specified by purchaser 2045 69.25 52 1.88

Dimensions & Weight of ASME B16.47 Series A Class 300 Weld Neck Flange

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 38.25 3.12 29.50 7.25 28.38 0.38 26.00 Specified by purchaser 605 34.50 28 1.75
28 40.75 3.38 31.50 7.75 30.50 0.44 28.00 Specified by purchaser 745 37.00 28 1.75
30 43.00 3.62 33.75 8.25 32.56 0.44 30.00 Specified by purchaser 870 39.25 28 1.88
32 45.25 3.88 36.00 8.75 34.69 0.44 32.00 Specified by purchaser 1005 41.50 28 2.00
34 47.50 4.00 38.00 9.12 36.88 0.50 34.00 Specified by purchaser 1145 43.50 28 2.00
36 50.00 4.12 40.25 9.50 39.00 0.50 36.00 Specified by purchaser 1275 46.00 32 2.12
38 46.00 4.25 40.50 7.12 39.12 0.50 38.00 Specified by purchaser 695 43.00 32 1.62
40 48.75 4.50 42.75 7.62 41.25 0.50 40.00 Specified by purchaser 840 45.50 32 1.75
42 50.75 4.69 44.75 7.88 43.25 0.50 42.00 Specified by purchaser 950 47.50 32 1.75
44 53.25 4.88 47.00 8.12 45.25 0.50 44.00 Specified by purchaser 1055 49.75 32 1.88
46 55.75 5.06 49.00 8.50 47.38 0.50 46.00 Specified by purchaser 1235 52.00 28 2.00
48 57.75 5.25 51.25 8.81 49.38 0.50 48.00 Specified by purchaser 1380 54.00 32 2.00
50 60.25 5.50 53.50 9.12 51.38 0.50 50.00 Specified by purchaser 1530 56.25 32 2.12
52 62.25 5.69 55.50 9.38 53.38 0.50 52.00 Specified by purchaser 1660 58.25 32 2.12
54 65.25 6.00 57.75 9.94 55.50 0.50 54.00 Specified by purchaser 2050 61.00 28 2.38
56 67.25 6.06 59.75 10.25 57.62 0.50 56.00 Specified by purchaser 2155 63.00 28 2.38
58 69.25 6.25 62.00 10.50 59.62 0.50 58.00 Specified by purchaser 2270 65.00 32 2.38
60 71.25 6.44 64.00 10.75 61.62 0.50 60.00 Specified by purchaser 2470 67.00 32 2.38

Dimensions & Weight of ASME B16.47 Series A Class 400 Weld Neck Flange

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 38.25 3.50 29.50 7.62 28.62 0.44 26.00 Specified by purchaser 650 34.50 28 1.88
28 40.75 3.75 31.50 8.12 30.81 0.50 28.00 Specified by purchaser 785 37.00 28 2.00
30 43.00 4.00 33.75 8.62 32.94 0.50 30.00 Specified by purchaser 905 39.25 28 2.12
32 45.25 4.25 36.00 9.12 35.00 0.50 32.00 Specified by purchaser 1065 41.50 28 2.12
34 47.50 4.38 38.00 9.50 37.19 0.56 34.00 Specified by purchaser 1200 43.50 28 2.12
36 50.00 4.50 40.25 9.88 39.38 0.56 36.00 Specified by purchaser 1340 46.00 32 2.12
38 47.50 4.88

40.75

 8.12 39.50 0.56 38.00 Specified by purchaser 935 44.00 32 1.88
40 50.00 5.12 43.00 8.50 41.50 0.56 40.00 Specified by purchaser 1090 46.25 32 2.00
42 52.00 5.25 45.00 8.81 43.62 0.56 42.00 Specified by purchaser 1190 48.25 32 2.00
44 54.50 5.50 47.25 9.18 45.62 0.56 44.00 Specified by purchaser 1375 50.50 32 2.12
46 56.75 5.75 49.50 9.62 47.75 0.56 46.00 Specified by purchaser 1525 52.75 36 2.12
48 59.50 6.00 51.50 10.12 49.88 0.56 48.00 Specified by purchaser 1790 55.25 28 2.38
50 61.75 6.19 53.62 10.56 52.00 0.56 50.00 Specified by purchaser 1950 57.50 32 2.38
52 63.75 6.38 55.62 10.88 54.00 0.56 52.00 Specified by purchaser 2125 59.50 32 2.38
54 67.00 6.69 57.88 11.38 56.12 0.56 54.00 Specified by purchaser 2565 62.25 28 2.62
56 69.00 6.88 60.12 11.75 58.25 0.56 56.00 Specified by purchaser 2710 64.25 32 2.62
58 71.00 7.00 62.12 12.06 60.25 0.56 58.00 Specified by purchaser 3230 66.25 32 2.62
60 74.25 7.31 64.38 12.56 62.38 0.56 60.00 Specified by purchaser 3820 69.00 32 2.88

Dimensions & Weight of ASME B16.47 Series A Class 600 Weld Neck Flange

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 40.00 4.25 29.50 8.75 29.44 0.50 26.00 Specified by purchaser 940 36.00 28 2.00
28 42.25 4.38 31.50 9.25 31.62 0.50 28.00 Specified by purchaser 1060 38.00 28 2.12
30 44.50 4.50 33.75 9.75 33.94 0.50 30.00 Specified by purchaser 1210 40.25 28 2.12
32 47.00 4.62 36.00 10.25 36.12 0.50 32.00 Specified by purchaser 1375 42.50 28 2.38
34 49.00 4.75 38.00 10.62 38.31 0.56 34.00 Specified by purchaser 1540 44.50 28 2.38
36 51.75 4.88 40.25 11.12 40.62 0.56 36.00 Specified by purchaser 1705 47.00 28 2.62
38 50.00 6.00 41.50 10.00 40.25 0.56 38.00 Specified by purchaser 1470 45.75 28 2.38
40 52.00 6.25 43.75 10.38 42.25 0.56 40.00 Specified by purchaser 1630 47.75 32 2.38
42 55.25 6.62 46.00 11.00 44.38 0.56 42.00 Specified by purchaser 2030 50.50 28 2.62
44 57.25 6.81 48.25 11.38 46.50 0.56 44.00 Specified by purchaser 2160 52.50 32 2.62
46 59.50 7.06 50.25 11.81 48.62 0.56 46.00 Specified by purchaser 2410 54.75 32 2.62
48 62.75 7.44 52.50 12.44 50.75 0.56 48.00 Specified by purchaser 2855 57.50 32 2.88
50 65.75 7.75 54.50 12.94 52.88 0.56 50.00 Specified by purchaser 3330 60.00 28 3.12
52 67.75 8.00 56.50 13.25 54.88 0.56 52.00 Specified by purchaser 3560 62.00 32 3.12
54 70.00 8.25 58.75 13.75 57.00 0.56 54.00 Specified by purchaser 3920 64.25 32 3.12
56 73.00 8.56 60.75 14.25 59.12 0.62 56.00 Specified by purchaser 4280 66.75 32 3.38
58 75.00 8.75 63.00 14.56 61.12 0.62 58.00 Specified by purchaser 4640 68.75 32 3.38
60 78.50 9.19 65.25 15.31 63.38 0.69 60.00 Specified by purchaser 5000 71.75 28 3.62

Dimensions & Weight of ASME B16.47 Series A Class 900 Weld Neck Flange

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 42.75 5.50 29.50 11.25 30.50 0.44 26.00 Specified by purchaser 1525 37.50 20 2.88
28 46.00 5.62 31.50 11.75 32.75 0.50 28.00 Specified by purchaser 1810 40.25 20 3.12
30 48.50 5.88 33.75 12.25 35.00 0.50 30.00 Specified by purchaser 2120 42.75 20 3.12
32 51.75 6.25 36.00 13.00 37.25 0.50 32.00 Specified by purchaser 2545 45.50 20 3.38
34 55.00 6.50 38.00 13.75 39.62 0.56 34.00 Specified by purchaser 2970 48.25 20 3.62
36 57.50 6.75 40.25 14.25 41.88 0.56 36.00 Specified by purchaser 3395 50.75 20 3.62
38 57.50 7.50 43.25 13.88 42.25 0.75 38.00 Specified by purchaser 3385 50.75 20 3.62
40 59.50 7.75 45.75 14.31 44.38 0.81 40.00 Specified by purchaser 3620 52.75 24 3.62
42 61.50 8.12 47.75 14.62 46.31 0.81 42.00 Specified by purchaser 3960 54.75 24 3.62
44 64.88 8.44 50.00 15.38 48.62 0.88 44.00 Specified by purchaser 4300 57.62 24 3.88
46 68.25 8.88 52.50 16.18 50.88 0.88 46.00 Specified by purchaser 4640 60.50 24 4.12
48 70.25 9.19 54.50 16.50 52.88 0.94 48.00 Specified by purchaser 4980 62.50 24 4.12

Dimensions & Weight of ASME B16.47 Series A Blind Flange (Class 150)

ASME B16.47 Series A Blind Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 34.25 2.69 29.50 702 31.75 24 1.38
28 36.50 2.81 31.50 833 34.00 28 1.38
30 38.75 2.94 33.75 982 36.00 28 1.38
32 41.75 3.19 36.00 1238 38.50 28 1.62
34 43.75 3.25 38.00 1384 40.50 32 1.62
36 46.00 3.56 40.25 1676 42.75 32 1.62
38 48.75 3.44 42.25 1819 45.25 32 1.62
40 50.75 3.56 44.25 2040 47.25 36 1.62
42 53.00 3.81 47.00 2380 49.50 36 1.62
44 55.25 4.00 49.00 2715 51.75 40 1.62
46 57.25 4.06 51.00 2961 53.75 40 1.62
48 59.50 4.25 53.50 3350 56.00 44 1.62
50 61.75 4.38 55.50 3716 58.25 44 1.88
52 64.00 4.56 57.50 4156 60.50 44 1.88
54 66.25 4.75 59.50 4639 62.75 44 1.88
56 68.75 4.88 62.00 5130 65.00 48 1.88
58 71.00 5.06 64.00 5675 67.25 48 1.88
60 73.00 5.19 66.00 6155 69.25 52 1.88

Dimensions & Weight of ASME B16.47 Series A Blind Flange (Class 300)

Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 38.25 3.31 29.50 1079 34.50 28 1.75
28 40.75 3.56 31.50 1315 37.00 28 1.75
30 43.00 3.75 33.75 1545 39.25 28 1.88
32 45.25 3.94 36.00 1795 41.50 28 2.00
34 47.50 4.12 38.00 2068 43.50 28 2.00
36 50.00 4.38 40.25 2435 46.00 32 2.12
38 46.00 4.25 40.50 2001 43.00 32 1.62
40 48.75 4.50 42.75 2380 45.50 32 1.75
42 50.75 4.69 44.75 2689 47.50 32 1.75
44 53.25 4.88 47.00 3079 49.75 32 1.88
46 55.75 5.06 49.00 3500 52.00 28 2.00
48 57.75 5.25 51.25 3896 54.00 32 2.00
50 60.25 5.50 53.50 4442 56.25 32 2.12
52 62.25 5.69 55.50 4906 58.25 32 2.12
54 65.25 6.00 57.75 5684 61.00 28 2.38
56 67.25 6.06 59.75 6099 63.00 28 2.38
58 69.25 6.25 62.00 6669 65.00 32 2.38
60 71.25 6.44 64.00 7274 67.00 32 2.38

Dimensions & Weight of ASME B16.47 Series A Blind Flange (Class 400)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 38.25 3.88 29.50 1263 34.50 28 1.88
28 40.75 4.12 31.50 1520 37.00 28 2.00
30 43.00 4.38 33.75 1802 39.25 28 2.12
32 45.25 4.56 36.00 2075 41.50 28 2.12
34 47.50 4.81 38.00 2415 43.50 28 2.12
36 50.00 5.06 40.25 2815 46.00 32 2.12
38 47.50 4.88

40.75

 2450 44.00 32 1.88
40 50.00 5.12 43.00 2849 46.25 32 2.00
42 52.00 5.25 45.00 3160 48.25 32 2.00
44 54.50 5.50 47.25 3635 50.50 32 2.12
46 56.75 5.75 49.50 4120 52.75 36 2.12
48 59.50 6.00 51.50 4725 55.25 28 2.38
50 61.75 6.25 53.62 5303 57.50 32 2.38
52 63.75 6.44 55.62 5823 59.50 32 2.38
54 67.00 6.75 57.88 6742 62.25 28 2.62
56 69.00 6.94 60.12 7352 64.25 32 2.62
58 71.00 7.12 62.12 7986 66.25 32 2.62
60 74.25 7.44 64.38 9126 69.00 32 2.88

Dimensions & Weight of ASME B16.47 Series A Blind Flange (Class 600)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 40.00 4.94 29.50 1760 36.00 28 2.00
28 42.25 5.19 31.50 2061 38.00 28 2.12
30 44.50 5.50 33.75 2423 40.25 28 2.12
32 47.00 5.81 36.00 2858 42.50 28 2.38
34 49.00 6.06 38.00 3237 44.50 28 2.38
36 51.75 6.38 40.25 3800 47.00 28 2.62
38 50.00 6.12 41.50 3405 45.75 28 2.38
40 52.00 6.38 43.75 3838 47.75 32 2.38
42 55.25 6.75 46.00 4585 50.50 28 2.62
44 57.25 7.00 48.25 5105 52.50 32 2.62
46 59.50 7.31 50.25 5758 54.75 32 2.62
48 62.75 7.69 52.50 6737 57.50 32 2.88
50 65.75 8.00 54.50 7695 60.00 28 3.12
52 67.75 8.25 56.50 8425 62.00 32 3.12
54 70.00 8.56 58.75 9333 64.25 32 3.12
56 73.00 8.88 60.75 10530 66.75 32 3.38
58 75.00 9.12 63.00 11414 68.75 32 3.38
60 78.50 9.56 65.25 13108 71.75 28 3.62

Dimensions & Weight of ASME B16.47 Series A Blind Flange (Class 900)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 42.75 6.31 29.50 2565 37.50 20 2.88
28 46.00 6.75 31.50 3178 40.25 20 3.12
30 48.50 7.18 33.75 3759 42.75 20 3.12
32 51.75 7.62 36.00 4541 45.50 20 3.38
34 55.00 8.06 38.00 5425 48.25 20 3.62
36 57.50 8.44 40.25 6210 50.75 20 3.62
38 57.50 8.50 43.25 6253 50.75 20 3.62
40 59.50 8.81 45.75 6940 52.75 24 3.62
42 61.50 9.12 47.75 7675 54.75 24 3.62
44 64.88 9.56 50.00 8955 57.62 24 3.88
46 68.25 10.06 52.50 10,426 60.50 24 4.12
48 70.25 10.38 54.50 11,398 62.50 24 4.12

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 75)

ASME B16.47 Series B Weld Neck Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 30.00 1.31 27.75 2.31 26.62 0.31 26.06 Specified by purchaser 80 28.50 36 0.75
28 32.00 1.31 29.75 2.44 28.62 0.31 28.06 Specified by purchaser 85 30.50 40 0.75
30 34.00 1.31 31.75 2.56 30.62 0.31 30.06 Specified by purchaser 90 32.50 44 0.75
32 36.00 1.38 33.75 2.75 32.62 0.31 32.06 Specified by purchaser 105 34.50 48 0.75
34 38.00 1.38 35.75 2.88 34.62 0.31 34.06 Specified by purchaser 110 36.50 52 0.75
36 40.69 1.44 38.00 3.38 36.81 0.38 36.06 Specified by purchaser 145 39.06 40 0.88
38 42.69 1.50 40.00 3.50 38.81 0.38 38.06 Specified by purchaser 160 41.06 40 0.88
40 44.69 1.50 42.00 3.62 40.81 0.38 40.06 Specified by purchaser 170 43.06 44 0.88
42 46.69 1.56 44.00 3.75 42.81 0.38 42.06 Specified by purchaser 185 45.06 48 0.88
44 49.25 1.69 46.25 4.12 44.88 0.38 44.06 Specified by purchaser 230 47.38 36 1.00
46 51.25 1.75 48.25 4.25 46.88 0.38 46.06 Specified by purchaser 245 49.38 40 1.00
48 53.25 1.81 50.25 4.38 48.88 0.38 48.06 Specified by purchaser 270 51.38 44 1.00
50 55.25 1.88 52.25 4.56 50.94 0.38 50.06 Specified by purchaser 290 53.38 44 1.00
52 57.38 1.88 54.25 4.75 52.94 0.38 52.06 Specified by purchaser 310 55.50 48 1.00
54 59.38 1.94 56.25 4.94 55.00 0.38 54.06 Specified by purchaser 340 57.50 48 1.00
56 62.00 2.00 58.50 5.31 57.12 0.44 56.06 Specified by purchaser 400 59.88 40 1.12
58 64.00 2.06 60.50 5.44 59.12 0.44 58.06 Specified by purchaser 430 61.88 44 1.12
60 66.00 2.19 62.50 5.69 61.12 0.44 60.06 Specified by purchaser 475 63.88 44 1.12

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 150)

Nominal Pipe Size Outside Diameter (O) Max Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 30.94 1.62 28.00 3.50 26.94 0.38 26.06 Specified by purchaser 120 29.31 36 0.88
28 32.94 1.75 30.00 3.75 28.94 0.38 28.06 Specified by purchaser 140 31.31 40 0.88
30 34.94 1.75 32.00 3.94 31.00 0.38 30.06 Specified by purchaser 150 33.31 44 0.88
32 37.06 1.81 34.00 4.25 33.06 0.38 32.06 Specified by purchaser 170 35.44 48 0.88
34 39.56 1.94 36.25 4.34 35.12 0.38 34.06 Specified by purchaser 210 37.69 40 1.00
36 41.62 2.06 38.25 4.62 37.19 0.38 36.06 Specified by purchaser 240 39.75 44 1.00
38 44.25 2.12 40.25 4.88 39.25 0.38 38.12 Specified by purchaser 290 42.12 40 1.12
40 46.25 2.19 42.50 5.06 41.31 0.38 40.12 Specified by purchaser 310 44.12 44 1.12
42 48.25 2.31 44.50 5.25 43.38 0.44 42.12 Specified by purchaser 345 46.12 48 1.12
44 50.25 2.38 46.50 5.38 45.38 0.44 44.12 Specified by purchaser 370 48.12 52 1.25
46 52.81 2.44 48.62 5.69 47.44 0.44 46.12 Specified by purchaser 435 50.56 40 1.25
48 54.81 2.56 50.75 5.88 49.50 0.44 48.12 Specified by purchaser 480 52.56 44 1.25
50 56.81 2.69 52.75 6.06 51.50 0.44 50.12 Specified by purchaser 520 54.56 48 1.25
52 58.81 2.75 54.75 6.19 53.56 0.44 52.12 Specified by purchaser 550 56.56 52 1.25
54 61.00 2.81 56.75 6.38 55.62 0.44 54.12 Specified by purchaser 620 58.75 56 1.25
56 63.00 2.88 58.75 6.56 57.69 0.56 56.12 Specified by purchaser 650 60.75 60 1.25
58 65.94 2.94 60.75 6.88 59.69 0.56 58.12 Specified by purchaser 780 63.44 48 1.38
60 67.94 3.00 63.00 7.06 61.81 0.56 60.12 Specified by purchaser 850 65.44 52 1.38

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 300)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26

34.12

 3.50 29.00 5.69 27.62 0.56 26.19 Specified by purchaser 400 31.62 32 1.38
28 36.25 3.50 31.00 5.88 29.75 0.56 28.19 Specified by purchaser 450 33.75 36 1.38
30 39.00 3.69 33.25 6.22 32.00 0.56 30.25 Specified by purchaser 550 36.25 36 1.50
32 41.50 4.06 33.50 6.62 34.00 0.62 32.25 Specified by purchaser 685 38.50 32 1.62
34 43.62 4.06 37.50 6.81 36.12 0.62 34.25 Specified by purchaser 750 40.62 36 1.62
36 46.12 4.06 39.75 7.12 38.00 0.62 36.25 Specified by purchaser 840 42.88 32 1.75
38 48.12 4.38 41.75 7.56 40.00 0.62 38.25 Specified by purchaser 915 44.88 36 1.75
40 50.12 4.56 43.88 7.81 42.00 0.62 40.25 Specified by purchaser 990 46.88 40 1.75
42 52.50 4.69 46.00 8.06 44.00 0.62 42.31 Specified by purchaser 1135 49.00 36 1.88
44 54.50 5.00 48.00 8.44 46.19 0.62 44.31 Specified by purchaser 1235 51.00 40 1.88
46 57.50 5.06 50.00 8.75 48.38 0.62 46.31 Specified by purchaser 1470 53.75 36 2.00
48 59.50 5.06 52.25 8.81 50.31 0.62 48.31 Specified by purchaser 1575 55.75 40 2.00
50 61.50 5.44 54.25 9.25 52.38 0.62 50.31 Specified by purchaser 1710 57.75 44 2.00
52 63.50 5.62 56.25 9.56 54.44 0.62 52.31 Specified by purchaser 1840 59.75 48 2.00
54 65.88 5.38 58.25 9.44 56.50 0.62 54.31 Specified by purchaser 1980 62.12 48 2.00
56 69.50 6.06 60.50 10.56 58.81 0.69 56.31 Specified by purchaser 2595 65.00 36 2.38
58 71.94 6.06 62.75 10.81 60.94 0.69 58.31 Specified by purchaser 2770 67.44 40 2.38
60 73.94 5.94 65.00 10.69 62.94 0.69 60.31 Specified by purchaser 2870 69.44 40 2.38

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 400)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 38.25 3.88 29.50 1263 34.50 28 1.88
28 40.75 4.12 31.50 1520 37.00 28 2.00
30 43.00 4.38 33.75 1802 39.25 28 2.12
32 45.25 4.56 36.00 2075 41.50 28 2.12
34 47.50 4.81 38.00 2415 43.50 28 2.12
36 50.00 5.06 40.25 2815 46.00 32 2.12
38 47.50 4.88

40.75

 2450 44.00 32 1.88
40 50.00 5.12 43.00 2849 46.25 32 2.00
42 52.00 5.25 45.00 3160 48.25 32 2.00
44 54.50 5.50 47.25 3635 50.50 32 2.12
46 56.75 5.75 49.50 4120 52.75 36 2.12
48 59.50 6.00 51.50 4725 55.25 28 2.38
50 61.75 6.25 53.62 5303 57.50 32 2.38
52 63.75 6.44 55.62 5823 59.50 32 2.38
54 67.00 6.75 57.88 6742 62.25 28 2.62
56 69.00 6.94 60.12 7352 64.25 32 2.62
58 71.00 7.12 62.12 7986 66.25 32 2.62
60 74.25 7.44 64.38 9126 69.00 32 2.88

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 600)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 35.00 4.38 28.62 7.12 27.50 0.50 26.00 Specified by purchaser 550 31.75 28 1.75
28 37.50 4.56 30.88 7.50 29.62 0.50 28.00 Specified by purchaser 650 34.00 28 1.88
30 40.25 4.94 33.12 8.06 31.75 0.50 30.00 Specified by purchaser 810 36.50 28 2.00
32 42.75 5.12 35.25 8.50 33.88 0.50 32.00 Specified by purchaser 950 38.75 28 2.12
34 45.75 5.56 37.50 9.19 36.00 0.56 34.00 Specified by purchaser 1205 41.50 24 2.38
36 47.75 5.75 39.75 9.56 38.12 0.56 36.00 Specified by purchaser 1340 43.50 28 2.38

Dimensions & Weight of ASME B16.47 Series B Weld Neck Flange (Class 900)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Minimum Fillet Radius (r) Top of Hub (A) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 40.25 5.31 30.00 10.19 29.25 0.44 26.00 Specified by purchaser 1050 35.50 20 2.62
28 43.50 5.81 32.25 10.88 31.38 0.50 28.00 Specified by purchaser 1520 38.25 20 2.88
30 46.50 6.12 34.50 11.38 33.50 0.50 30.00 Specified by purchaser 1820 40.75 20 3.12
32 48.75 6.31 36.50 11.94 35.75 0.50 32.00 Specified by purchaser 2065 43.00 20 3.12
34 51.75 6.75 39.00 12.56 37.88 0.56 34.00 Specified by purchaser 2450 45.50 20 3.38
36 53.00 6.81 40.50 12.81 40.00 0.56 36.00 Specified by purchaser 2520 47.25 24 3.12

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 75)

ASME B16.47 Series B Blind Flange Dimensions and weights
Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 30.00 1.31 27.75 255 28.50 36 0.75
28 32.00 1.31 29.75 290 30.50 40 0.75
30 34.00 1.31 31.75 330 32.50 44 0.75
32 36.00 1.44 33.75 390 34.50 48 0.75
34 38.00 1.50 35.75 430 36.50 52 0.75
36 40.69 1.67 38.00 520 39.06 40 0.88
38 42.69 1.75 40.00 595 41.06 40 0.88
40 44.69 1.75 42.00 760 43.06 44 0.88
42 46.69 1.88 44.00 895 45.06 48 0.88
44 49.25 1.94 46.25 1065 47.38 36 1.00
46 51.25 2.00 48.25 1185 49.38 40 1.00
48 53.25 2.12 50.25 1315 51.38 44 1.00
50 55.25 2.18 52.25 1505 53.38 44 1.00
52 57.38 2.25 54.25 1665 55.50 48 1.00
54 59.38 2.38 56.25 1840 57.50 48 1.00
56 62.00 2.44 58.50 2111 59.88 40 1.12
58 64.00 2.50 60.50 2300 61.88 44 1.12
60 66.00 2.62 62.50 2500 63.88 44 1.12

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 150)

Nominal Pipe Size Outside Diameter (O) Max Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 30.94 1.75 28.00 375 29.31 36 0.88
28 32.94 1.88 30.00 455 31.31 40 0.88
30 34.94 2.00 32.00 545 33.31 44 0.88
32 37.06 2.12 34.00 648 35.44 48 0.88
34 39.56 2.25 36.25 782 37.69 40 1.00
36 41.62 2.31 38.25 890 39.75 44 1.00
38 44.25 2.50 40.25 1090 42.12 40 1.12
40 46.25 2.62 42.50 1247 44.12 44 1.12
42 48.25 2.69 44.50 1393 46.12 48 1.12
44 50.25 2.81 46.50 1579 48.12 52 1.25
46 52.81 2.94 48.62 1825 50.56 40 1.25
48 54.81 3.06 50.75 2045 52.56 44 1.25
50 56.81 3.18 52.75 2284 54.56 48 1.25
52 58.81 3.31 54.75 2547 56.56 52 1.25
54 61.00 3.44 56.75 2848 58.75 56 1.25
56 63.00 3.56 58.75 3145 60.75 60 1.25
58 65.94 3.68 60.75 3560 63.44 48 1.38
60 67.94 3.81 63.00 3913 65.44 52 1.38

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 300)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 34.12 3.50 29.00 905 31.62 32 1.38
28 36.25 3.50 31.00 1023 33.75 36 1.38
30 39.00 3.69 33.25 1250 36.25 36 1.50
32 41.50 4.06 33.50 1556 38.50 32 1.62
34 43.62 4.06 37.50 1719 40.62 36 1.62
36 46.12 4.06 39.75 1920 42.88 32 1.75
38 48.12 4.38 41.75 2257 44.88 36 1.75
40 50.12 4.56 43.88 2550 46.88 40 1.75
42 52.50 4.69 46.00 2875 49.00 36 1.88
44 54.50 5.00 48.00 3305 51.00 40 1.88
46 57.50 5.12 50.00 3766 53.75 36 2.00
48 59.50 5.31 52.25 4183 55.75 40 2.00
50 61.50 5.50 54.25 4629 57.75 44 2.00
52 63.50 5.68 56.25 5096 59.75 48 2.00
54 65.88 5.88 58.25 5679 62.12 48 2.00
56 69.50 6.18 60.50 6642 65.00 36 2.38
58 71.94 6.38 62.75 7347 67.44 40 2.38
60 73.94 6.56 65.00 7980 69.44 40 2.38

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 400)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 33.50 3.50 28.00 875 30.75 28 1.50
28 36.00 3.75 30.00 1081 33.00 24 1.62
30 38.25 4.00 32.25 1302 35.25 28 1.62
32 40.75 4.25 34.38 1570 37.50 28 1.75
34 42.75 4.38 36.50 1780 39.50 32 1.75
36 45.50 4.69 38.62 2160 42.00 28 1.88

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 600)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 35.00 4.38 28.62 1195 31.75 28 1.75
28 37.50 4.56 30.88 1427 34.00 28 1.88
30 40.25 5.00 33.12 1800 36.50 28 2.00
32 42.75 5.31 35.25 2160 38.75 28 2.12
34 45.75 5.68 37.50 2645 41.50 24 2.38
36 47.75 5.94 39.75 3013 43.50 28 2.38

Dimensions & Weight of ASME B16.47 Series B Blind Flange (Class 900)

Nominal Pipe Size Outside Diameter (O) Min Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
26 40.25 6.06 30.00 2185 35.50 20 2.62
28 43.50 6.56 32.25 2762 38.25 20 2.88
30 46.50 6.93 34.50 3334 40.75 20 3.12
32 48.75 7.31 36.50 3865 43.00 20 3.12
34 51.75 7.68 39.00 4575 45.50 20 3.38
36 53.00 7.94 40.50 4963 47.25 24 3.12

Dimensions & Weight of ASME B16.5 Forged Flange (Class 150)

ASME B16.5 Forged Flange Dimensions and weights

NPS

 O T TJ R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r D Thr
½ 3.5 0.38 0.44 1.38 1.19 4-0.62 2.38 0.88 0.62 0.9 0.84 0.56 1.81 0.62 0.12 0.38 0.62
¾ 3.88 0.44 0.5 1.69 1.5 4-0.62 2.75 1.09 0.82 1.11 1.05 0.56 2 0.62 0.12 0.44 0.62
1 4.25 0.5 0.56 2 1.94 4-0.62 3.12 1.36 1.05 1.38 1.32 0.62 2.12 0.69 0.12 0.5 0.69
1¼ 4.62 0.56 0.62 2.5 2.31 4-0.62 3.5 1.7 1.38 1.72 1.66 0.75 2.19 0.81 0.19 0.56 0.81
1½ 5 0.62 0.69 2.88 2.56 4-0.62 3.88 1.95 1.61 1.97 1.9 0.81 2.38 0.88 0.25 0.62 0.88
2 6 0.69 0.75 3.62 3.06 4-0.75 4.75 2.44 2.07 2.46 2.38 0.94 2.44 1 0.31 0.69 1
2½ 7 0.81 0.88 4.12 3.56 4-0.75 5.5 2.94 2.47 2.97 2.88 1.06 2.69 1.12 0.31 0.75 1.12
3 7.5 0.88 0.94 5 4.25 4-0.75 6 3.57 3.07 3.6 3.5 1.12 2.69 1.19 0.38 0.81 1.19
3½ 8.5 0.88 0.94 5.5 4.81 8-0.75 7 4.07 3.55 4.1 4 1.19 2.75 1.25 0.38 0.88 1.25
4 9 0.88 0.94 6.19 5.31 8-0.75 7.5 4.57 4.03 4.6 4.5 1.25 2.94 1.31 0.44 0.94 1.31
5 10 0.88 0.94 7.31 6.44 8-0.88 8.5 5.66 5.05 5.69 5.56 1.38 3.44 1.44 0.44 0.94 1.44
6 11 0.94 1 8.5 7.56 8-0.88 9.5 6.72 6.07 6.75 6.63 1.5 3.44 1.56 0.5 1.06 1.56
8 13.5 1.06 1.12 10.62 9.69 8-0.88 11.75 8.72 7.98 8.75 8.63 1.69 3.94 1.75 0.5 1.25 1.75
10 16 1.12 1.19 12.75 12 12-1.00 14.25 10.88 10.02 10.92 10.75 1.88 3.94 1.94 0.5 1.31 1.94
12 19 1.19 1.25 15 14.38 12-1.00 17 12.88 12 12.92 12.75 2.12 4.44 2.19 0.5 1.56 2.19
14 21 1.31 1.38 16.25 15.75 12-1.12 18.75 14.14 13.25 14.18 14 2.19 4.94 3.12 0.5 1.63 2.25
16 23.5 1.38 1.44 18.5 18 16-1.12 21.25 16.16 15.25 16.19 16 2.44 4.94 3.44 0.5 1.75 2.5
18 25 1.5 1.56 21 19.88 16-1.25 22.75 18.18 17.25 18.2 18 2.62 5.44 3.81 0.5 1.94 2.69
20 27.5 1.62 1.69 23 22 20-1.25 25 20.2 19.25 20.25 20 2.81 5.62 4.06 0.5 2.13 2.88
22 29.5 1.75 1.81 25.25 24.25 20-1.38 27.25 22.22 21.25 22.25 22 3.07 5.82 4.25 0.5 2.38 3.13
24 32 1.81 1.88 27.25 26.12 20-1.38 29.5 24.25 23.25 24.25 24 3.19 5.94 4.38 0.5 2.5 3.25

Dimensions & Weight of ASME B16.5 Forged Flange (Class 300)

NPS O T TJ R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.5 0.56 1.38 1.5 4-0.63 2.62 0.88 0.62 0.9 0.84 0.81 2 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.56 0.62 1.69 1.88 4-0.75 3.25 1.09 0.82 1.11 1.05 0.94 2.19 1 0.12 1.14 0.44 0.62
1 4.88 0.62 0.69 2 2.12 4-0.75 3.5 1.36 1.05 1.38 1.32 1 2.38 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.69 0.75 2.5 2.5 4-0.75 3.88 1.7 1.38 1.72 1.66 1 2.5 1.06 0.19 1.75 0.56 0.81
1½ 6.12 0.75 0.81 2.88 2.75 4-0.88 4.5 1.95 1.61 1.97 1.9 1.13 2.63 1.19 0.25 1.98 0.62 0.88
2 6.5 0.81 0.88 3.62 3.31 8-0.75 5 2.44 2.07 2.46 2.38 1.25 2.69 1.31 0.31 2.5 0.69 1.12
2½ 7.5 0.94 1 4.12 3.94 8-0.88 5.88 2.94 2.47 2.97 2.88 1.44 2.94 1.5 0.31 3 0.75 1.25
3 8.25 1.06 1.12 5 4.62 8-0.88 6.62 3.57 3.07 3.6 3.5 1.63 3.06 1.69 0.38 3.63 0.81 1.25
3½ 9 1.12 1.19 5.5 5.25 8-0.88 7.25 4.07 3.55 4.1 4 1.69 3.13 1.75 0.38 4.13 …. 1.44
4 10 1.19 1.25 6.19 5.75 8-0.88 7.88 4.57 4.03 4.6 4.5 1.82 3.32 1.88 0.44 4.63 …. 1.44
5 11 1.31 1.38 7.31 7 8-0.88 9.25 5.66 5.05 5.69 5.56 1.94 3.82 2 0.44 5.69 …. 1.69
6 12.5 1.38 1.44 8.5 8.12 12-0.88 10.62 6.72 6.07 6.75 6.63 2 3.82 2.06 0.5 6.75 …. 1.81
8 15 1.56 1.62 10.62 10.25 12-1.00 13 8.72 7.98 8.75 8.63 2.38 4.32 2.44 0.5 8.75 …. 2
10 17.5 1.81 1.88 12.75 12.62 16-1.12 15.25 10.88 10.02 10.92 10.75 2.56 4.56 3.75 0.5 10.88 …. 2.19
12 20.5 1.94 2 15 14.75 16-1.25 17.75 12.88 12 12.92 12.75 2.82 5.06 4 0.5 12.94 …. 2.38
14 23 2.06 2.12 16.25 16.75 20-1.25 20.25 14.14 13.25 14.18 14 2.94 5.56 4.38 0.5 14.19 …. 2.5
16 25.5 2.19 2.25 18.5 19 20-1.38 22.5 16.16 15.25 16.19 16 3.19 5.69 4.75 0.5 16.19 …. 2.69
18 28 2.31 2.38 21 21 24-1.38 24.75 18.18 17.25 18.2 18 3.44 6.19 5.12 0.5 18.19 …. 2.75
20 30.5 2.44 2.5 23 23.12 24-1.38 27 20.2 19.25 20.25 20 3.69 6.32 5.5 0.5 20.19 …. 2.88
22 33 2.57 2.63 25.25 25.25 24-1.63 29.25 22.22 21.25 22.25 22 3.93 6.43 5.75 0.5 22.19 …. 3.13
24 36 2.69 2.75 27.25 27.62 24-1.63 32 24.25 23.25 24.25 24 4.13 6.56 6 0.5 24.19 …. 3.25

Dimensions & Weight of ASME B16.5 Forged Flange (Class 400)

NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-.075 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 …. 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 …. 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 …. 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 …. 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 …. 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 …. 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 …. 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 …. 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 …. 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 …. 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 …. 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 …. …. —
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 …. 3.25

Dimensions & Weight of ASME B16.5 Forged Flange (Class 600)

NPS O T R X #/Dia of Holes Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser    0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 …. 1.56
4 10.75 1.5 6.19 6 8-1.00 8.5 4.57 4.6 4.5 2.12 4 2.12 0.44 4.63 …. 1.62
5 13 1.75 7.31 7.44 8-1.12 10.5 5.66 5.69 5.56 2.38 4.5 2.38 0.44 5.69 …. 1.88
6 14 1.88 8.5 8.75 12-1.12 11.5 6.72 6.75 6.63 2.62 4.62 2.62 0.5 6.75 …. 2
8 16.5 2.19 10.62 10.75 12-1.25 13.75 8.72 8.75 8.63 3 5.25 3 0.5 8.75 …. 2.25
10 20 2.5 12.75 13.5 16-1.38 17 10.88 10.92 10.75 3.38 6 4.38 0.5 10.88 …. 2.56
12 22 2.62 15 15.75 20-1.38 19.25 12.88 12.92 12.75 3.62 6.12 4.62 0.5 12.94 …. 2.75
14 23.75 2.75 16.25 17 20-1.50 20.75 14.14 14.18 14 3.69 6.5 5 0.5 14.19 …. 2.88
16 27 3 18.5 19.5 20-1.63 23.75 16.16 16.19 16 4.19 7 5.5 0.5 16.19 …. 3.06
18 29.25 3.25 21 21.5 20-1.75 25.75 18.18 18.2 18 4.62 7.25 6 0.5 18.19 …. 3.12
20 32 3.5 23 24 24-1.75 28.5 20.2 20.25 20 5 7.5 6.5 0.5 20.19 …. 3.25
22 34.25 3.75 25.25 26.25 24-1.75 30.63 22.22 22.25 22 5.25 7.75 6.88 0.5 …. …. —
24 37 4 27.25 28.25 24-2.00 33 24.25 24.25 24 5.5 8 7.25 0.5 24.19 …. 3.62

Dimensions & Weight of ASME B16.5 Forged Flange (Class 900)

NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C Thr
Sizes 1/2″ through 2 1/2″ are identical to class 1500.
3 9.5 1.5 5 5 8-1.00 7.5 3.57 To Be Specified By Purchaser 3.6 3.5 2.12 4 2.12 0.38 3.63 1.62
4 11.5 1.75 6.19 6.25 8-1.25 9.25 4.57 4.6 4.5 2.75 4.5 2.75 0.44 4.63 1.88
5 13.75 2 7.31 7.5 8-1.38 11 5.66 5.69 5.56 3.12 5 3.12 0.44 5.69 2.12
6 15 2.19 8.5 9.25 12-1.25 12.5 6.72 6.75 6.63 3.38 5.5 3.38 0.5 6.75 2.25
8 18.5 2.5 10.63 11.75 12-1.50 15.5 8.72 8.75 8.63 4 6.38 4.5 0.5 8.75 2.5
10 21.5 2.75 12.75 14.5 16-1.50 18.5 10.88 10.92 10.75 4.25 7.25 5 0.5 10.88 2.81
12 24 3.12 15 16.5 20-1.50 21 12.88 12.92 12.75 4.63 7.88 5.62 0.5 12.94 3
14 25.25 3.38 16.25 17.75 20-1.63 22 14.14 14.18 14 5.12 8.38 6.12 0.5 14.19 3.25
16 27.75 3.5 18.5 20 20-1.75 24.25 16.16 16.19 16 5.25 8.5 6.5 0.5 16.19 3.38
18 31 4 21 22.25 20-2.00 27 18.18 18.2 18 6 9 7.5 0.5 18.19 3.5
20 33.75 4.25 23 24.5 20-2.13 29.5 20.2 20.25 20 6.25 9.75 8.25 0.5 20.19 3.62
24 41 5.5 27.25 29.5 20-2.63 35.5 24.25 24.25 24 8 11.5 10.5 0.5 24.19 4

Dimensions & Weight of ASME B16.5 Forged Flange (Class 1500)

NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 4.75 0.88 1.38 1.5 4-0.88 3.25 0.88 To Be Specified By Purchaser 0.9 0.84 1.25 2.38 1.25 0.12 0.93 0.38 0.88
¾ 5.12 1 1.69 1.75 4-0.88 3.5 1.09 1.11 1.05 1.38 2.75 1.38 0.12 1.14 0.44 1
1 5.88 1.12 2 2.06 4-1.00 4 1.36 1.38 1.32 1.62 2.88 1.62 0.12 1.41 0.5 1.12
1¼ 6.25 1.12 2.5 2.5 4-1.00 4.38 1.7 1.72 1.66 1.62 2.88 1.62 0.19 1.75 0.56 1.19
1½ 7 1.25 2.88 2.75 4-1.12 4.88 1.95 1.97 1.9 1.75 3.25 1.75 0.25 1.99 0.62 1.25
2 8.5 1.5 3.63 4.12 8-1.00 6.5 2.44 2.46 2.38 2.25 4 2.25 0.31 2.5 0.69 1.5
2½ 9.62 1.62 4.13 4.88 8-1.12 7.5 2.94 2.97 2.88 2.5 4.12 2.5 0.31 3 0.75 1.88
3 10.5 1.88 5 5.25 8-1.25 8 …. 3.6 3.5 …. 4.62 2.88 0.38 …. …. ….
4 12.25 2.12 6.19 6.38 8-1.38 9.5 …. 4.6 4.5 …. 4.88 3.56 0.44 …. …. ….
5 14.75 2.88 7.31 7.75 8-1.63 11.5 …. 5.69 5.56 …. 6.12 4.12 0.44 …. …. ….
6 15.5 3.25 8.5 9 12-1.50 12.5 …. 6.75 6.63 …. 6.75 4.69 0.5 …. …. ….
8 19 3.62 10.63 11.5 12-1.75 15.5 …. 8.75 8.63 …. 8.38 5.62 0.5 …. …. ….
10 23 4.25 12.75 14.5 12-2.00 19 …. 10.92 10.75 …. 10 7 0.5 …. …. ….
12 26.5 4.88 15 17.75 16-2.12 22.5 …. 12.92 12.75 …. 11.12 8.62 0.5 …. …. ….
14 29.5 5.25 16.25 19.5 16-2.38 25 …. 14.18 14 …. 11.75 9.5 0.5 …. …. ….
16 32.5 5.75 18.5 21.75 16-2.63 27.75 …. 16.19 16 …. 12.25 10.25 0.5 …. …. ….
18 36 6.38 21 23.5 16-2.88 30.5 …. 18.2 18 …. 12.88 10.88 0.5 …. …. ….
20 38.75 7 23 25.25 16-3.12 32.75 …. 20.25 20 …. 14 11.5 0.5 …. …. ….
24 46 8 27.25 30 16-3.63 39 …. 24.25 24 …. 16 13 0.5 …. …. ….

Dimensions & Weight of ASME B16.5 Forged Flange (Class 2500)

NPS O T R X #/Dia of Holesa Bolt Circle Dia B2b B3 H L L2 L3 r C Thr
½ 5.25 1.19 1.38 1.69 4-0.88 3.5 To Be Specified By Purchaser 0.9 0.84 1.56 2.88 1.56 0.12 0.93 1.12
¾ 5.5 1.25 1.69 2 4-0.88 3.75 1.11 1.05 1.69 3.12 1.69 0.12 1.14 1.25
1 6.25 1.38 2 2.25 4-1.00 4.25 1.38 1.32 1.88 3.5 1.88 0.12 1.41 1.38
1¼ 7.25 1.5 2.5 2.88 4-1.12 5.13 1.72 1.66 2.06 3.75 2.06 0.19 1.75 1.5
1½ 8 1.75 2.88 3.12 4-1.25 5.75 1.97 1.9 2.38 4.38 2.38 0.25 1.99 1.75
2 9.25 2 3.63 3.75 8-1.12 6.75 2.46 2.38 2.75 5 2.75 0.31 2.5 2
2½ 10.5 2.25 4.13 4.5 8-1.25 7.75 2.97 2.88 3.12 5.62 3.12 0.31 3 2.25
3 12 2.62 5 5.25 8-1.38 9 3.6 3.5 …. 6.62 3.62 0.38 …. ….
4 14 3 6.19 6.5 8-1.63 10.75 4.6 4.5 …. 7.5 4.25 0.44 …. ….
5 16.5 3.62 7.31 8 8-1.88 12.75 5.69 5.56 …. 9 5.12 0.44 …. ….
6 19 4.25 8.5 9.25 8-2.12 14.5 6.75 6.63 …. 10.75 6 0.5 …. ….
8 21.75 5 10.63 12 12-2.12 17.25 8.75 8.63 …. 12.5 7 0.5 …. ….
10 26.5 6.5 12.75 14.75 12-2.63 21.25 10.92 10.75 …. 16.5 9 0.5 …. ….
12 30 7.25 15 17.38 12-2.88 24.38 12.92 12.75 …. 18.25 10 0.5 …. ….

Dimensions & Weight of DIN Flange

DIN Flange Dimensions and weights
Flange Nominal Diameter Pressure Rating (PN)
**Nominal BSP Pipe Size PN6 PN10 PN16 PN25 PN40
DN 10 75 90 90 90 90 O.D.
3/8″ 50 60 60 60 60 PCD (bolt circle)
4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 15 80 95 95 95 95 O.D.
1/2″ 55 65 65 65 65 PCD (bolt circle)
4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 20 90 105 105 105 105 O.D.
3/4″ 65 75 75 75 75 PCD (bolt circle)
4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 25 100 115 115 115 115 O.D.
1″ 75 85 85 85 85 PCD (bolt circle)
4 x 11 4 x 14 4 x 14 4 x 14 4 x 14 # of holes x diam. of holes
DN 32 120 140 140 140 140 O.D.
1 1/4″ 90 100 100 100 100 PCD (bolt circle)
4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 40 130 150 150 150 150 O.D.
1 1/2″ 100 110 110 110 110 PCD (bolt circle)
4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 50 140 165 165 165 165 O.D.
2″ 110 125 125 125 125 PCD (bolt circle)
4 x 14 4 x 18 4 x 18 4 x 18 4 x 18 # of holes x diam. of holes
DN 65 160 185 185 185 185 O.D.
2 1/2″ 130 145 145 145 145 PCD (bolt circle)
4 x 14 4 x 18 4 x 18 8 x 18 8 x 18 # of holes x diam. of holes
DN 80 190 200 200 200 200 O.D.
3″ 150 160 160 160 160 PCD (bolt circle)
4 x 18 8 x 18 8 x 18 8 x 18 8 x 18 # of holes x diam. of holes
DN 100 210 220 220 235 235 O.D.
4″ 170 180 180 190 190 PCD (bolt circle)
4 x 18 8 x 18 8 x 18 8 x 22 8 x 22 # of holes x diam. of holes
DN 125 240 250 250 270 270 O.D.
5″ 200 210 210 220 220 PCD (bolt circle)
8 x 18 8 x 18 8 x 18 8 x 26 8 x 26 # of holes x diam. of holes
DN 150 265 285 285 300 300 O.D.
6″ 225 240 240 250 250 PCD (bolt circle)
8 x 18 8 x 22 8 x 22 8 x 26 8 x 26 # of holes x diam. of holes
DN 175 315 315 330 350 O.D.
7″ 270 270 280 295 PCD (bolt circle)
8 x 22 8 x 22 12 x 26 12 x 30 # of holes x diam. of holes
DN 200 320 340 340 360 375 O.D.
8″ 280 295 295 310 320 PCD (bolt circle)
8 x 18 8 x 22 12 x 22 12 x 26 12 x 30 # of holes x diam. of holes
DN 250 375 395 405 425 450 O.D.
10″ 335 350 355 370 385 PCD (bolt circle)
12 x 18 12 x 22 12 x 26 12 x 30 12 x 33 # of holes x diam. of holes
DN 300 440 445 460 485 515 O.D.
12″ 395 400 410 430 450 PCD (bolt circle)
12 x 22 12 x 22 12 x 26 16 x 30 16 x 33 # of holes x diam. of holes
DN 350 490 505 520 555 580 O.D.
14″ 445 460 470 490 510 PCD (bolt circle)
12 x 22 16 x 22 16 x 26 16 x 33 16 x 36 # of holes x diam. of holes
DN 400 540 565 580 620 660 O.D.
16″ 495 515 525 550 585 PCD (bolt circle)
16 x 22 16 x 26 16 x 30 16 x 36 16 x 39 # of holes x diam. of holes
DN 500 645 670 715 730 755 O.D.
20″ 600 620 650 660 670 PCD (bolt circle)
20 x 22 20 x 26 20 x 33 20 x 36 20 x 42 # of holes x diam. of holes
DN 600 755 780 840 845 O.D.
24″ 705 725 770 770 PCD (bolt circle)
20 x 24 20 x 27 20 x 33 20 x 36 # of holes x diam. of holes

O.D. = outside diameter PCD = bolt circle diameter PN = nominal pressure in bars 
Note: (1 bar = 14.5 psi = 0.1 MPa = 100 KPa = 1.02 Kgf/cm²)


**Nominal Pipe Sizes as used in this table are NOT USA sizes, but are the BSP (British Standard Pipe sizes)
which are similar to but NOT the same.

Dimensions & Weight of DIN 2573 PN6 Flange

Germany standard flange DIN 2573 for soldering or welding Nominall Pressure 6
Flansche, glatt zum löten oder schweißen DIN 2573 Nenndruck 6
Brides plates a souder DIN 2573 pression nominale 6
Pipe Flange Screws Weight
(7,85 Kg/dm3)
Rated
Diameter		 d1 d5 D b c k Holes Thread d2 Kg
ISO Series 1 DIN Series 2
15 – 20 21 80 12 5 55 4 M 10 11 0,41
21,3 – 22
20 – 25 26 90 14 5 65 4 M 10 11 0,60
26,9 – 27,6
25 – 30 31 100 14 5 75 4 M 10 11 0,74
33,7 – 34,4
32 – 38 39 120 16 5 90 4 M 12 14 1,19
42,4 – 43,1
40 – 44,5 45,5 130 16 5 100 4 M 12 14 1,39
48,3 – 49
50 – 57 58,1 140 16 6 110 4 M 12 14 1,53
60,3 – 61,1
65 76,1 – 77,1 160 16 6 130 4 M 12 14 1,89
80 88,9 – 90,3 190 18 7 150 4 M 16 18 2,98
100 – 108 109,6 210 18 7 170 4 M 16 18 3,46
114,3 – 115,9
125 – 133 134,8 240 20 7 200 8 M 16 18 4,60
139,7 – 141,6
150 – 159 161,1 265 20 7 225 8 M 16 18 5,22
168,3 – 170,5
200 219,1 – 221,8 320 22 7 280 8 M 16 18 7,15
250 – 267 270,2 375 24 7 335 12 M 16 18 9,61
273 – 276,2
300 323,9 – 327,6 440 24 7 395 12 M 20 22 12,60
350 355,6 – 359,7 490 26 7 445 12 M 20 22 15,60
– 368 372,2
400 406,4 – 411 540 28 7 495 16 M 20 22 18,40
– 419 423,7
(450)* 457 – 462,5 595 30 7 550 16 M 20 22 21,40
500 508 – 531,6 645 30 7 600 20 M 20 22 24,60

Dimensions & Weight of DIN 2631 PN6 WNRF Flange

Germany standard flange DIN 2631 welding neck flanges; nominal pressure 6
Vorschweißflansche DIN 2631 Nenndruck 6
Brides à souder à collerette DIN 2631: pression nominale 6
Pipe Flange Neck Raised face Screws Weight
(7,85 Kg/dm3)
Rated d1 D b k h1 d3 s r h2 d4 f Holes Thread d2 Kg
Diameter ISO Series DIN Series
15 – 20 80 12 55 30 28 2 4 6 40 2 4 M 10 11 0,392
21,3 – 30
20 – 25 90 14 65 32 35 2,3 4 6 50 2 4 M 10 11 0,592
26,9 – 38
25 – 30 100 14 75 35 40 2,6 4 6 60 2 4 M 10 11 0,747
33,7 – 42
32 – 38 120 14 90 35 50 2,6 6 6 70 2 4 M 12 14 1,05
42,4 – 55
40 – 44,5 130 14 100 38 58 2,6 6 7 80 3 4 M 12 14 1,18
48,3 – 62
50 – 57 140 14 110 38 70 2,9 6 8 90 3 4 M 12 14 1,34
60,3 – 74
65 76,1 – 160 14 130 38 88 2,9 6 9 110 3 4 M 12 14 1,67
80 88,9 – 190 16 150 42 102 3,2 8 10 128 3 4 M 16 18 2,71
100 – 108 210 16 170 45 122 3,6 8 10 148 3 4 M 16 18 3,24
114,3 130
125 – 133 240 18 200 48 148 4 8 10 178 3 8 M 16 18 4,49
139,7 – 155
150 – 159 265 18 225 48 172 4,5 10 12 202 3 8 M 16 18 5,15
168,3 – 184
200 219,1 – 320 20 280 55 236 5,9 10 15 258 3 8 M 16 18 7,78
250 – 267 375 22 335 60 282 6,3 12 15 312 3 12 M 16 18 10,8
273 – 290
300 323,9 – 440 22 395 62 342 7,1 15 15 365 4 12 M 20 22 14
350 355,6 – 490 22 445 62 385 7,1 12 15 415 4 12 M 20 22 18,5
– 368 16,7
400 406,4 – 540 22 495 65 438 7,1 12 15 465 4 16 M 20 22 21,2
– 419 19
500 508 – 645 24 600 68 538 7,1 12 15 570 4 20 M 20 22 28,6
600 610 – 755 24 705 70 640 7,1 12 16 670 5 20 M 24 26 31,5
700 711 – 860 24 810 70 740 7,1 12 16 775 5 24 M 24 26 37,4
800 813 – 975 24 920 70 842 7,1 12 16 880 5 24 M 27 30 46,1
900 914 – 1075 26 1020 70 942 7,1 12 16 980 5 24 M 27 30 55,6
1000 1016 – 1175 26 1120 70 1045 7,1 16 16 1080 5 28 M 27 30 61,9

Dimensions & Weight of DIN 2565/DIN 2566 PN6, PN16 Threaded Flange

DIN 2565 PN 6 THREADED FLANGE
Rated
Diameter		   Flange Neck Raised face Screws Weight
(7,85 Kg/dm3)
d1 Thread D b k h1 d3 d4 f Holes Thread d2 Kg
15 21,3 R 1/2 80 12 55 20 30 40 2 4 M 10 11 0,373
20 26,9 R 3/4 90 14 65 24 40 50 2 4 M 10 11 0,59
25 33,7 R 1 100 14 75 24 50 60 2 4 M 10 11 0,743
32 42,4 R 1 1/4 120 14 90 26 60 70 2 4 M 12 14 1,05
40 48,3 R 1 1/2 130 14 100 26 70 80 3 4 M 12 14 1,2
50 60,3 R 2 140 14 110 28 80 90 3 4 M 12 14 1,37
65 76,1 R 2 1/2 160 14 130 32 100 110 3 4 M 12 14 1,92
80 88,9 R 3 190 16 150 34 110 128 3 4 M 16 18 2,82
100 114,3 R 4 210 16 170 38 130 148 3 4 M 16 18 3,19
125 139,7 R 5 240 18 200 40 160 178 3 8 M 16 18 4,47
150 165,1 R 6 265 18 225 44 185 202 3 8 M 16 18 5,3
DIN 2566 PN16 THREADED FLANGE
Rated
Diameter		   Flange Neck Raised face Screws Weight
(7,85 Kg/dm3)
d1 Thread D b k h1 d3 d4 f Holes Thread d2 Kg
15 21,3 R 1/2 95 14 65 20 35 45 2 4 M 12 14 0,613
20 26,9 R 3/4 105 16 75 24 45 58 2 4 M 12 14 0,91
25 33,7 R 1 115 16 85 24 52 68 2 4 M 12 14 1,1
32 42,4 R 1 1/4 140 16 100 26 60 78 2 4 M 16 18 1,6
40 48,3 R 1 1/2 150 16 110 26 70 88 3 4 M 16 18 1,78
50 60,3 R 2 165 18 125 28 85 102 3 4 M 16 18 2,43
65 76,1 R 2 1/2 185 18 145 32 105 122 3 4 M 16 18 3,18
80 88,9 R 3 200 20 160 34 118 138 3 8 M 16 18 4,12
100 114,3 R 4 220 20 180 38 140 158 3 8 M 16 18 4,47
125 139,7 R 5 250 22 210 40 168 188 3 8 M 16 18 6,13
150 165,1 R 6 285 22 240 44 195 212 3 8 M 20 22 7,92

Dimensions & Weight of DIN 2527 Blind Flange (PN6, PN10, PN16, PN25, PN40)

Germany standard flange DIN 2527 Blind flange Nominal Pressure 6 to 100
Blindflansche Nenndruck 6 bis 100
Brides plaines, pressions nominales 6 à 100
DIN 2527 PN6 BLIND FLANGE
Rated
Diameter		 Flange Screws Weight
(7,85 Kg/dm3)
D b k Number Thread d2 Shape B
Kg
15 80 12 55 4 M 10 11 0.44
20 90 14 65 0.66
25 100 14 75 0.83
32 120 14 90 M 12 14 1.18
40 130 14 100 1.39
50 140 14 110 1.63
65 160 14 130 2.15
80 190 16 150 M 16 18 3.44
100 210 16 170 4.22
125 240 18 200 8 6.11
150 265 18 225 7.51
200 320 20 280 12.31
250 375 22 335 12 18.54
300 440 22 395 M 20 22 25.46
350 490 22 445 31.77
400 540 22 495 16 38.49
500 645 24 600 20 60.10
DIN 2527 PN10 BLIND FLANGE
Rated
Diameter		 Flange Screws Weight
(7,85 Kg/dm3)
D b k Number Thread d2 Shape B
Kg
15 95 14 65 4 M 12 14 0,72
20 105 16 75 1,01
25 115 16 85 1,23
32 140 16 100 M 16 18 1,8
40 150 16 110 2,09
50 165 18 125 2,88
65 185 18 145 3,66
80 200 20 160 4,77
100 220 20 180 8 5,65
125 250 22 210 8,42
150 285 22 240 M 20 22 10,4
200 340 24 295 16,5
250 395 26 350 12 24
300 445 26 400 30,9
350 505 26 460 16 40,6
400 565 26 515 M 24 26 49,4
500 670 28 620 20 75
DIN 2527 PN16 BLIND FLANGE
Rated
Diameter		 Flange Screws Weight
(7,85 Kg/dm3)
D b k Number Thread d2 Shape B
Kg
15 95 14 65 4 M 12 14 0,72
20 105 16 75 1,01
25 115 16 85 1,23
32 140 16 100 M 16 18 1,8
40 150 16 110 2,09
50 165 18 125 2,88
65 185 18 145 3,66
80 200 20 160 8 4,77
100 220 20 180 5,65
125 250 22 210 8,42
150 285 22 240 M 20 22 10,4
200 340 24 295 12 16,1
250 405 26 355 M 24 26 24,9
300 460 28 410 35,1
350 520 30 470 16 47,8
400 580 32 525 M 27 30 63,5
500 715 36 650 20 M 30 33 102

Dimensions & Weight of DIN 2642 PN10 Loose Flange

Germany standard flange DIN 2642 lapped flange; nominal pressure 10  
Lose Flansche Vorschweißbördel Glatte Bunde DIN 2642 Nenndruck 10
Brides tournantes: pression nominale 10
Pipe Flange Screws Weight
(7,85 Kg/dm3)
Rated
Diameter		 d1 D d6 b k e Holes Thread d2 Kg
ISO 
Series 1		 DIN 
Series 2
15 – 20 95 22 14 65 3 4 M 12 14 0,689
21,3 – 24
20 – 25 105 28 14 75 3 4 M 12 14 0,806
26,9 – 30
25 – 30 115 33 16 85 4 4 M 12 14 1,11
33,7 – 36
32 – 38 140 42 16 100 4 4 M 16 18 1,64
42,4 – 46
40 – 44,5 150 50 16 110 4 4 M 16 18 1,86
48,3 – 54
50 – 57 165 62 16 125 5 4 M 16 18 2,2
60,3 – 65
65 76,1 – 185 81 16 145 5 4 M 16 18 2,62
80 88,9 – 200 94 18 160 5 8 M 16 18 3,32
100 – 108 220 113 18 180 5 8 M 16 18 3,67
114,3 – 119
125 – 133 250 138 18 210 5 8 M 16 18 4,54
139,7 – 145
150 – 159 285 164 18 240 5 8 M 20 22 5,6
168,3 – 173
200 219,1 – 340 225 20 295 5 8 M 20 22 7,46
250 – 267 395 273 22 350 5 12 M 20 22 10,3
273 – 279
300 323,9 – 445 329 26 400 5 12 M 20 22 14
350 355,6 – 505 362 28 460 6 16 M 20 22 18,5
– 368 374
400 406,4 – 565 413 32 515 6 16 M 24 26 25
– 419 426
(450) 457 – 615 467 38 565 6 20 M 24 26 30,6
500 508 – 670 517 38 620 6 20 M 24 26 37
600 610 – 780 618 44 725 7 20 M 27 30 56,3
700 711 – 895 721 50 840 7 24 M 27 30 80,4
800 813 – 1015 824 56 950 7 24 M 30 33 113,2
  • 1)Facing according to DIN 2526 
    Flat face: 
    Form A, Face without any requirements
    Form B, Face Rz=160, machined (not smoother than 40µm)
    Raised Face: 
    Form C, Face Rz=160, machined (not smoother than 40µm)
    Form D, Face Rz=40, machined
    Form E, Face Rz=16, machined
  • 2)Tongue and groove according to DIN 2512
    Form F, Tongue
    Form N, Groove 
  • 3)Male and Female according to DIN 2513, DIN 2514
    Form V13, V14, Male
    Form R13, R16, Female
  • 4)Chemfering for diaphragm-weld packings, PN64-PN400, according to DIN 2695
  • 5)Facing for lens-shaped joints, PN64-PN400, according to DIN 2696

Dimensions & Weight of JIS B2220 5K Flange

JIS B2220 5K Dimensions and weights
Nominal Dia. of Flange Outside Dia. of Flange D Sectional Dimensions of flange Nominal Bolt Size Welding
Dia. of Bolt Circle C Dia. Of raised Face g Inside Dia.     Of Flange do Outside Dia. Of Applicable pipe t T Dia. of Hub Radius r Raised Face f Hole Dia. H Number of Bolt Holes
a b W1 W2
10 75 55         39         17.8          17.3 9 – – – – 1 12 4 M10 5 2.5
15 80 60 44 22.2 21.7 9 – – – – 1 12 4 M10 5 3
20 85 65 49 27.7 27.2 10 – – – – 1 12 4 M10 5 3
25 95 75 59 34.5 34 10 – – – – 1 12 4 M10 5 3
32 115 90 70 43.2 42.7 12 – – – – 2 15 4 M12 6 3
40 120 95 75 49.1 48.6 12 – – – – 2 15 4 M12 6 3
50 130 105 85 61.1 60.5 14 – – – – 2 15 4 M12 6 3
65 155 130 110 77.1 76.3 14 – – – – 2 15 4 M12 6 4
80 180 145 121 90 89.1 14 – – – – 2 19 4 M16 6 4
90 190 155 131 102.6 101.6 14 – – – – 2 19 4 M16 6 4
100 200 165 141 115.4 114.3 16 – – – – 2 19 8 M16 7 4
125 235 200 176 141.2 139.8 16 – – – – 2 19 8 M16 7 4
150 265 230 206 166.6 165.2 18 – – – – 2 19 8 M16 7 5
175 300 260 232 192.1 190.7 18 – – – – 2 23 8 M20 7.5 5
200 320 280 252 218 216.3 20 – – – – 2 23 8 M20 8.5 6
225 345 305 277 243.7 241.8 20 – – – – 2 23 12 M20 9 6
250 385 345 317 269.5 267.4 22 – – – – 2 23 12 M20 10 6
300 430 390 360 321 318.5 22 – – – – 3 23 12 M20 10 6
350 480 435 403 358.1 355.6 24 – – – – 3 25 12 M22 12 7
400 540 495 463 409 406.4 24 – – – – 3 25 16 M22 12 7
450 605 555 523 460 457.2 24 40 495 500 5 3 25 16 M22 12 7
500 655 605 573 511 508 24 40 546 552 5 3 25 20 M22 12 7
550 720 665 630 562 558.8 26 42 597 603 5 3 27 20 M24 12 7
600 770 715 680 613 609.6 26 44 648 654 5 3 27 20 M24 12 7
650 825 770 735 664 660.4 26 48 702 708 5 3 27 24 M24 12 7
700 875 820 785 715 711.2 26 48 751 758 5 3 27 24 M24 12 7
750 945 880 840 766 762 28 52 802 810 5 3 33 24 M30 12 7
800 995 930 890 817 812.8 28 52 854 862 5 3 33 24 M30 13 8
850 1045 980 940 868 863.6 28 54 904 912 5 3 33 24 M30 13 8
900 1095 1030 990 919 914.4 30 56 956 964 5 3 33 24 M30 13 8
1000 1195 1130 1090 1021 1016 32 60 1058 1066 5 3 33 28 M30 14 9
*(1100) 1305 1240 1200 1123 1117.6 32 – – – – 3 33 28 M30 　 　
*1200 1420 1350 1305 1225 1219.2 34 – – – – 3 33 32 M30 　 　
*1350 1575 1505 1460 – 1371.6 34 – – – – 3 33 32 M30 　 　
*1500 1730 1660 1615 – 1524 36 – – – – 3 33 36 M30 　 　

Dimensions & Weight of JIS B2220 10K Flange

Nominal Dia. of Flange Outside Dia. of Flange D Sectional Dimensions of flange Nominal Bolt Size Welding
Dia. of Bolt Circle C Dia. Of raised Face g Inside Dia.     Of Flange do Outside Dia. Of Applicable pipe t T Dia. of Hub Radius r Raised Face f Hole Dia. H Number of Bolt Holes
a b W1 W2
10 90 65 46 17.8 17.3 12 – – – – 1 15 4 M12 5 2.5
15 95 70 51 22.2 21.7 12 – – – – 1 15 4 M12 5 3
20 100 75 56 27.7 27.2 14 – – – – 1 15 4 M12 5 3
25 125 90 67 34.5 34 14 – – – – 1 19 4 M16 5 3
32 135 100 76 43.2 42.7 16 – – – – 2 19 4 M16 6 3
40 140 105 81 49.1 48.6 16 – – – – 2 19 4 M16 6 3
50 155 120 96 61.1 60.5 16 – – – – 2 19 4 M16 6 3
65 175 140 116 77.1 76.3 18 – – – – 2 19 4 M16 6.5 4
80 185 150 126 90 89.1 18 – – – – 2 19 8 M16 6.5 4
-90 195 160 136 102.6 101.6 18 – – – – 2 19 8 M16 6.5 4
100 210 175 151 115.4 114.3 18 – – – – 2 19 8 M16 7 4
125 250 210 182 141.2 139.8 20 – – – – 2 23 8 M20 7.5 4
150 280 240 212 166.6 165.2 22 – – – – 2 23 8 M20 8 5
-175 305 265 237 192.1 190.7 22 – – – – 2 23 12 M20 9 5
200 330 290 262 218 216.3 22 – – – – 2 23 12 M20 9 6
-255 350 310 282 243.7 241.8 22 – – – – 2 23 12 M20 9 6
250 400 355 324 269.5 267.4 24 36 288 292 6 2 25 12 M22 10 6
300 445 400 368 321 318.5 24 38 340 346 6 3 25 16 M22 10 6
350 490 445 413 358.1 355.6 26 42 380 386 6 3 25 16 M22 12 7
400 560 510 475 409 406.4 28 44 436 442 6 3 27 16 M24 12 7
450 620 565 530 460 457.2 30 48 496 502 6 3 27 20 M24 14 8
500 675 620 585 511 508 30 48 548 554 6 3 27 20 M24 14 8
550 745 680 640 562 558.8 32 52 604 610 6 3 33 20 M30 15 9
600 795 730 690 613 609.6 32 52 656 662 6 3 33 24 M30 16 10
650 845 780 740 664 660.4 34 56 706 712 6 3 33 24 M30 16 10
700 905 840 800 715 711.2 34 58 762 770 6 3 33 24 M30 17 10
750 970 900 855 766 762 36 62 816 824 6 3 33 24 M30 18 11
800 1020 950 905 817 812.8 36 64 868 876 6 3 33 28 M30 19 12
-850 1070 1000 955 868 863.6 36 66 920 928 6 3 33 28 M30 19 12
900 1120 1050 1005 919 914.4 38 70 971 979 6 3 33 28 M30 22 14
1000 1235 1160 1110 1021 1016 40 74 1073 1081 6 3 39 28 M36 22 14
*(1100) 1345 1270 1220 1123 1117.6 42 – – – – 3 39 28 M36 　 　
*1200 1465 1380 1325 1225 1219.2 44 – – – – 3 39 32 M36    
*1350 1630 1540 1480 – 1371.6 48 – – – – 3 45 36 M42 　 　
*1500 1795 1700 1635 – 1524 50 – – – – 3 45 40 M42    

Dimensions & Weight of JIS B2220 16K Flange

JIS B2220 16K Dimensions and weights
Nominal Dia. of Flange Outside Dia. of Flange D Sectional Dimensions of flange Nominal Bolt Size
Dia. of Bolt Circle C Dia. Of raised Face g Inside Dia.     Of Flange do Outside Dia. Of Applicable pipe t T Dia. of Hub Radius r Raised Face f Hole Dia. H Number of Bolt Holes
a b
10 90 65 46 17.8 17.3 12 16 26 28 4 1 15 4 M12
15 95 70 51 22.2 21.7 12 16 30 32 4 1 15 4 M12
20 100 75 56 27.7 27..2 14 20 38 42 4 1 15 4 M12
25 125 90 67 34.5 34 14 20 46 50 4 1 19 4 M16
32 135 100 76 43.2 42.7 16 22 56 60 5 2 19 4 M16
40 140 105 81 49.1 48.6 16 24 62 66 5 2 19 4 M16
50 155 120 96 61.1 60.5 16 24 76 80 5 2 19 8 M16
65 175 140 116 77.1 76.3 18 26 94 98 5 2 19 8 M16
80 200 160 132 90 89.1 20 28 108 112 6 2 23 8 M20
-90 210 170 145 102.6 101.6 20 30 120 124 6 2 23 8 M20
100 225 185 160 115.4 114.3 22 34 134 138 6 2 23 8 M20
125 270 225 195 141.2 139.8 22 34 164 170 6 2 25 8 M22
150 305 260 230 166.6 165.2 24 38 196 202 6 2 25 12 M22
200 350 305 275 218 216.3 26 40 244 252 6 2 25 12 M22
250 430 380 345 269.5 267.4 28 44 304 312 6 2 27 12 M24
300 480 430 395 321 318.5 30 48 354 364 8 3 27 16 M24
350 540 480 440 358.1 355.6 34 52 398 408 8 3 33 16 M30X3
400 605 540 495 409 406.4 38 60 446 456 10 3 33 16 M30X3
450 675 605 560 460 457.2 40 64 504 514 10 3 33 20 M30X3
500 730 660 615 511 508 42 68 558 568 10 3 33 20 M30X3
-550 795 720 670 562 558.8 44 70 612 622 10 3 39 20 M36X3
600 845 770 720 613 609.6 46 74 666 676 10 3 39 24 M36X3
-650 895 820 770 664 660.4 48 77 704 726 10 5 39 24 M36X3
700 960 875 820 715 711.2 50 80 754 776 10 5 42 24 M39X3
-750 1020 935 880 766 762 52 83 806 832 10 5 42 24 M39X3
800 1085 990 930 817 812.8 54 86 865 885 10 5 48 24 M45X3
-850 1135 1040 980 868 863.6 56 89 916 936 10 5 48 24 M45X3
900 1185 1090 1030 919 914.4 58 93 968 986 10 5 48 28 M45X3
1000 1320 1210 1140 1021 1016 62 99 1070 1098 12 5 56 28 M52X3
-1100 1420 1310 1240 1123 1117.6 66 105 1180 1200 12 5 56 32 M52X3
1200 1530 1420 1350 1225 1219.2 70 112 1282 1302 12 5 56 32 M52X3

Dimensions & Weight of JIS B2220 20K Flange

JIS B2220 20K Dimensions and weights
Nominal Dia. of Flange Outside Dia. of Flange D Sectional Dimensions of flange Reference
Dia. of Bolt Circle C Dia. Of raised Face g Inside Dia.     Of Flange do Outside Dia. of Steel pipe t T Dia. of Hub Radius r f D Number of Bolt Holes Holes Dia. H Nominal Bolt SIZE S1 M S2 N L
a b
10 90 65 46 17.8 17.3 14 20 30 32 4 1 – 4 15 M12 27 4 27 4 –
15 95 70 51 22.2 21.7 14 20 34 36 4 1 – 4 15 M12 31 4 31 4 –
20 100 75 56 27.7 27.2 16 22 40 42 4 1 – 4 15 M12 37 4 37 4 –
25 125 90 67 34.5 34 16 24 48 50 4 1 　 4 19 M16 44 4 44 4.5 –
32 135 100 76 43.2 42.7 18 26 56 60 5 2 – 4 19 M16 52 4 53 5 –
40 140 105 81 49.1 48.6 18 26 62 66 5 2 – 4 19 M16 58 4 59 5.5 –
50 155 120 96 61.1 60.5 18 26 76 80 5 2 – 8 19 M16 70 4 72 5.5 –
65 175 140 116 77.7 76.3 20 30 100 104 5 2 65.9 8 19 M16 94 6 – – 6
80 200 160 132 90 89.1 22 34 113 117 6 2 78.1 8 23 M20 107 6 – – 6
-90 210 170 145 102.6 101.6 24 36 126 130 6 2 90.2 8 23 M20 120 6 – – 6
100 225 185 160 115.4 114.3 24 36 138 142 6 2 102.3 8 23 M20 132 6 – – 6
125 270 225 195 141.2 139.8 26 40 166 172 6 2 126.6 8 25 M22 160 7 – – 6
150 305 260 230 166.6 165.2 28 42 196 202 6 2 151 12 25 M22 186 8 – – 6
200 350 305 275 218 216.3 30 46 244 252 6 2 199.9 12 25 M22 237 9 – – 6
250 430 380 345 269.5 267.4 34 52 304 312 6 2 248.8 12 27 M24 290 10 – – 6
300 480 430 395 321 318.5 36 56 354 364 8 3 297.9 16 27 M24 345 11 – – 6
350 540 480 440 358.1 355.6 40 62 398 408 8 3 333.4 16 33 M30X3 384 12 – – 6
400 605 540 495 409 406.4 46 70 446 456 10 3 381 16 33 M30X3 437 13 – – 7
450 675 605 560 460 457.2 48 78 504 514 10 3 431.8 20 33 M30X3 490 15 – – 7
500 730 660 615 511 508 50 84 558 568 10 3 482.6 20 33 M30X3 544 16 – – 7
-550 795 720 670 562 558.8 52 90 612 622 10 3 533.4 20 39 M36X3 595 16 – – 7
600 845 770 720 613 609.6 54 96 666 676 10 3 584.2 24 39 M36X3 646 18 – – 7
*650 945 850 790 664 660.4 60 　 　 　 　 5 　 24 48 M45X3 　 　 　 　 　
*700 995 900 840 715 711.2 64 　 　 　 　 5 　 24 48 M45X3 　 　 　 　 　
*750 1080 970 900 766 762 68 　 　 　 　 5 　 24 56 M52X3 　 　 　 　 　
*800 1140 1030 960 817 812.8 72 　 　 　 　 5 　 24 56 M52X3 　 　 　 　 　
*850 1200 1090 1020 868 863.6 74 　 　 　 　 5 　 24 56 M52X3 　 　 　 　 　
*900 1250 1140 1070 919 914.4 76 　 　 　 　 5 　 28 56 M52X3 　 　 　 　 　

Dimensions & Weight of JIS B2220 30K Slip On Flange

JIS B2220 30K Slip On Dimensions and weights
Nominal Dia. of Flange Outside Dia. of Flange D Sectional Dimensions of flange Reference
Dia. of Bolt Circle C Dia. Of raised Face g Inside Dia.     Of Flange do Outside Dia. of Steel pipe t T Dia. of Hub Radius r f D Number of Bolt Holes Holes Dia. H Nominal Bolt SIZE S1 M S2 N L
a b
10 110 75 52 17.8 17.3 16 24 30 34 4 1 – 4 19 M16 – – – – –
15 115 80 55 22.2 21.7 18 26 36 40 5 1 – 4 19 M16 31 4 40 5 –
20 120 85 60 27.7 27.2 18 28 42 46 5 1 – 4 19 M16 37 5 44 5 –
25 130 95 70 34.5 34 20 30 50 54 5 1 – 4 19 M16 55 6 52 5 –
32 140 105 80 43.2 42.7 22 32 60 64 6 2 – 4 19 M16 52 6 60 5 –
40 160 120 90 49.1 48.6 22 34 66 70 6 2 – 4 23 M20 58 6 66 5 –
50 165 130 105 61.1 60.5 22 36 82 86 6 2 – 8 19 M16 70 6.5 78 5 –
65 200 160 130 77.1 76.3 26 40 102 106 8 2 65.9 8 23 M20 96 9.5 94 5 6
80 210 170 140 90 89.1 28 44 115 21 8 2 78.1 8 23 M20 109 9.5 – – 6
-90 230 185 150 102.6 101.6 30 46 128 134 8 2 90.2 8 25 M22 122 9.5 – – 6
100 240 195 160 115.4 114.3 32 48 141 147 8 2 102.3 8 25 M22 135 9.5 – – 6
125 275 230 195 141.2 139.8 36 54 166 172 8 2 126.6 8 25 M22 160 9.5 – – 6
150 325 275 235 166.6 165.2 38 58 196 204 8 2 151 12 27 M24 186 9.5 – – 6
200 370 320 280 218 216.3 42 64 248 256 8 2 199.9 12 27 M24 237 9.5 – – 6
250 450 390 345 269.5 267.4 48 72 306 314 10 2 248.8 12 22 M30 290 10 – – 6
300 515 450 405 321 318.5 52 78 360 370 10 3 297.9 16 33 M30 345 12 – – 6
350 560 495 450 358.1 355.6 54 84 402 412 12 3 333.4 16 33 M30 383 13 – – 6
400 630 560 510 409 406.4 60 92 456 468 15 3 381 16 39 M36 435 14 – – 7

Dimensions & Weight of JIS B2220 30K Weld Neck Flange

JIS B2220 30K Weld Neck Dimensions and weights
Nominal Pipe Size Outside Dia. of Flange D Sectional Dimensions of Flange   Nominal Bolt Size
Bolt Circle Dia. C Dia. of Raised Face g Outside Dia. of Steel Pipe T b a R t d Radius       r  s f Number of Bolt Holes Dia. of Hole h
15 115 80 55 21.7 45 40 22 20 18 15.8 6 3.1 1 4 19 M16
20 120 85 60 27.2 45 44 27.5 20 18 21.1 6 3.2 1 4 19 M16
25 130 95 70 34 48 52 34.4 20 20 26.8 6 3.8 1 4 19 M16
32 140 105 80 42.7 52 62 43.1 30 22 35.1 6 4 2 4 19 M16
40 160 120 90 48.6 54 70 49.1 30 22 40.7 6 4.2 2 4 23 M20
50 165 130 105 60.5 57 84 61 30 22 52.2 8 4.4 2 8 19 M16
65 200 160 130 76.3 69 105 76.9 30 26 65.3 8 5.8 2 8 23 M20
80 210 170 140 89.1 73 118 89.7 30 28 76.4 8 6.1 2 8 23 M20
90 230 185 150 101.6 74 130 102 30 30 89.5 8 6.4 2 8 25 M22
100 240 195 160 114.3 76 142 115 30 32 101.5 8 6.8 2 8 25 M22
125 275 230 195 139.8 86 172 141 50 36 125.7 10 7.5 2 8 25 M22
150 325 275 235 165.2 95 202 166 50 38 150 10 8.1 2 12 27 M24
200 370 320 280 216.3 102 254 218 50 42 198.7 10 9.4 2 12 27 M24
250 450 390 345 267.4 118 312 269 50 48 247.5 12 10.6 2 12 33 M30 3
300 515 450 405 318.5 127 366 320 50 52 296.4 15 11.8 3 16 33 M30 3
350 560 495 450 355.6 134 406 357 80 54 331.8 15 12.7 3 16 33 M30 3
400 630 560 510 406.4 149 462 408 80 60 379.1 20 14.6 3 16 39

Dimensions & Weight of JIS B2220 Flange Facing (FLAT FACE RAISED FACE)

JIS B2220 Flat Face Raised Face Dimensions and weights
Nominal Dia of Flange Male & Female Type Tongue & Groove Type
C3 C4 f3 f4 C1 C2 C3 C4 f3 f4
10 38 39 6 5 28 27 38 39 6 5
15 42 43 6 5 32 31 42 43 6 5
20 50 51 6 5 38 37 50 51 6 5
25 60 61 6 5 45 44 60 61 6 5
32 70 71 6 5 55 54 70 71 6 5
40 75 76 6 5 60 59 75 76 6 5
50 90 91 6 5 70 69 90 91 6 5
65 110 111 6 5 90 89 110 111 6 5
80 120 121 6 5 100 99 120 121 6 5
90 130 131 6 5 110 109 130 131 6 5
100 145 146 6 5 125 124 145 146 6 5
125 175 176 6 5 150 149 175 176 6 5
150 215 216 6 5 190 189 215 216 6 5
20 260 261 6 5 230 229 260 261 6 5
250 325 326 6 5 295 294 325 326 6 5
300 375 376 6 5 340 339 375 376 6 5
350 415 416 6 5 380 379 415 416 6 5
400 475 476 6 5 440 439 475 476 6 5

Dimensions & Weight of JIS B2220 Flange Facing (Male & Female Type. Tongue & Groove Type)

JIS B2220 Tongue & Groove Flange Dimensions and weights
Nominal Dia of Flange Male & Female Type Tongue & Groove Type
C3 C4 f3 f4 C1 C2 C3 C4 f3 f4
10 38 39 6 5 28 27 38 39 6 5
15 42 43 6 5 32 31 42 43 6 5
20 50 51 6 5 38 37 50 51 6 5
25 60 61 6 5 45 44 60 61 6 5
32 70 71 6 5 55 54 70 71 6 5
40 75 76 6 5 60 59 75 76 6 5
50 90 91 6 5 70 69 90 91 6 5
65 110 111 6 5 90 89 110 111 6 5
80 120 121 6 5 100 99 120 121 6 5
90 130 131 6 5 110 109 130 131 6 5
100 145 146 6 5 125 124 145 146 6 5
125 175 176 6 5 150 149 175 176 6 5
150 215 216 6 5 190 189 215 216 6 5
20 260 261 6 5 230 229 260 261 6 5
250 325 326 6 5 295 294 325 326 6 5
300 375 376 6 5 340 339 375 376 6 5
350 415 416 6 5 380 379 415 416 6 5
400 475 476 6 5 440 439 475 476 6 5

Dimensions & Weight of steel hub flanges class D AWWA C207

steel hub flanges class D AWWA C207 Dimensions and weights
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt T L E
4 100 228.60 116.08 8 190.50            15.88 12.70 22.23 134.92
5 125 254.00 143.76 8 215.90 19.05 14.27 31.75 160.32
6 150 279.40 170.69 8 241.30 19.05 14.27 31.75 192.07
8 200 342.90 221.49 8 298.45 19.05 14.27 31.75 246.08
10 250 406.40 276.35 12 361.95 22.23 17.48 31.75 304.80
12 300 482.60 327.15 12 431.80 22.23 17.48 31.75 365.13
14 350 533.40 360.43 12 476.25 25.40 19.05 31.75 400.05
16 400 596.90 411.23 16 539.75 25.40 19.05 31.75 457.20
18 450 635.00 462.03 16 577.85 28.58 19.05 31.75 504.83
20 500 698.50 512.83 20 635.00 28.58 19.05 31.75 558.80
22 550 749.30 563.63 20 692.15 31.75 25.40 44.45 615.95
24 600 812.80 614.43 20 749.30 31.75 25.40 44.45 663.58
26 650 869.95 665.23 24 806.45 31.75 25.40 44.45 723.90
28 700 927.10 716.03 28 863.60 31.75 25.40 44.45 774.70
30 750 984.25 766.83 28 914.40 31.75 25.40 44.45 825.50
32 800 1060.45 817.63 28 977.90 38.10 28.58 44.45 882.65
34 850 1111.25 868.43 32 1028.70 38.10 28.58 44.45 933.45
36 900 1168.40 919.23 32 1085.85 38.10 28.58 44.45 984.25
38 950 1238.25 970.03 32 1149.35 38.10 28.58 44.45 1035.05
40 1000 1289.05 1020.83 36 1200.15 38.10 28.58 44.45 1092.20
42 1050 1346.20 1071.63 36 1257.30 38.10 31.75 44.45 1143.00
44 1100 1403.35 1122.43 40 1314.45 38.10 31.75 57.15 1193.80
46 1150 1454.15 1173.23 40 1365.25 38.10 31.75 57.15 1244.60
48 1200 1511.30 1224.03 44 1422.40 38.10 34.93 63.50 1295.40
50 1250 1568.45 1274.83 44 1479.55 44.45 34.93 63.50 1346.20
52 1300 1625.60 1325.63 44 1536.70 44.45 34.93 63.50 1397.00
54 1350 1682.75 1376.43 44 1593.85 44.45 34.93 63.50 1447.80
60 1500 1854.20 1528.83 52 1758.95 44.45 38.10 69.85 1600.20
66 1650 2032.00 1681.23 52 1930.40 44.45 38.10 69.85 1752.60
72 1800 2197.10 1833.63 60 2095.50 44.45 38.10 69.85 1905.00
78 1950 2362.20 1986.03 64 2260.60 50.80 44.45 76.20 2063.75
84 2100 2533.65 2138.43 64 2425.70 50.80 44.45 76.20 2222.50
90 2250 2705.10 2290.83 68 2590.80 57.15 50.80 82.55 2381.25
96 2400 2876.55 2443.23 68 2755.90 57.15 50.80 82.55 2540.00

Dimensions & Weight of steel hub flanges class E AWWA C207

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt T L E
4 100 228.60 116.08 8 190.50             15.88 23.83 33.32 134.92
5 125 254.00 143.76 8 215.90 19.05 23.83 36.53 163.53
6 150 279.40 170.69 8 241.30 19.05 25.40 39.67 192.07
8 200 342.90 221.49 8 298.45 19.05 28.58 44.45 246.08
10 250 406.40 276.35 12 361.95 22.23 30.18 49.23 304.80
12 300 482.60 327.15 12 431.80 22.23 31.75 55.58 365.13
14 350 533.40 360.43 12 476.25 25.40 34.93 57.15 400.05
16 400 596.90 411.23 16 539.75 25.40 36.53 63.50 457.20
18 450 635.00 462.03 16 577.85 28.58 39.67 68.28 504.83
20 500 698.50 512.83 20 635.00 28.58 42.88 73.03 558.80
22 550 749.30 563.63 20 692.15 31.75 46.02 79.38 609.60
24 600 812.80 614.43 20 749.30 31.75 48.20 82.55 663.58
26 650 869.95 665.23 24 806.45 31.75 50.80 85.73 723.90
28 700 927.10 716.03 28 863.60 31.75 52.37 87.33 781.05
30 750 984.25 766.83 28 914.40 31.75 53.98 88.90 831.85
32 800 1060.45 817.63 28 977.90 38.10 57.15 92.08 889.00
34 850 1111.25 868.43 32 1028.70 38.10 58.72 93.68 939.80
36 900 1168.40 919.23 32 1085.85 38.10 60.33 95.25 996.95
38 950 1238.25 970.03 32 1149.35 38.10 60.33 95.25 1060.45
40 1000 1289.05 1020.83 36 1200.15 38.10 63.50 98.43 1111.25
42 1050 1346.20 1071.63 36 1257.30 38.10 66.68 101.60 1168.40
44 1100 1403.35 1122.43 40 1314.45 38.10 66.68 101.60 1219.20
46 1150 1454.15 1173.23 40 1365.25 38.10 68.28 103.17 1270.00
48 1200 1511.30 1224.03 44 1422.40 38.10 69.85 104.78 1327.15
50 1250 1568.45 1274.83 44 1479.55 44.45 69.85 104.78 1377.95
52 1300 1625.60 1325.63 44 1536.70 44.45 73.03 107.95 1435.10
54 1350 1682.75 1376.43 44 1593.85 44.45 76.20 111.13 1492.25
60 1500 1854.20 1528.83 52 1758.95 44.45 79.38 114.30 1657.35
66 1650 2032.00 1681.23 52 1930.40 44.45 85.73 123.83 1816.10
72 1800 2197.10 1833.63 60 2095.50 44.45 88.90 127.00 1993.90
78 1950 2362.20 1986.03 64 2260.60 50.80 98.43 136.53 2146.30
84 2100 2533.65 2138.43 64 2425.70 50.80 98.43 136.53 2298.70
90 2250 2705.10 2290.83 68 2590.80 57.15 107.95 146.05 2457.45
96 2400 2876.55 2443.23 68 2755.90 57.15 107.95 146.05 2609.85

Dimensions & Weight of steel ring flanges class B AWWA C207

steel ring flanges class B AWWA C207 Dimensions and weights
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50            15.88 15.88              15.88          
5 125 254.00 143.76 8 215.90 19.05 15.88 15.88
6 150 279.40 170.69 8 241.30 19.05 17.48 17.48
8 200 342.90 221.49 8 298.45 19.05 17.48 17.48
10 250 406.40 276.35 12 361.95 22.23 17.48 17.48
12 300 482.60 327.15 12 431.80 22.23 17.48 18.26
14 350 533.40 360.43 12 476.25 25.40 17.48 20.1
16 400 596.90 411.23 16 539.75 25.40 17.48 22.66
18 450 635.00 462.03 16 577.85 28.58 17.48 24.13
20 500 698.50 512.83 20 635.00 28.58 17.48 26.42
22 550 749.30 563.63 20 692.15 31.75 19.05 28.74
24 600 812.80 614.43 20 749.30 31.75 19.05 30.89
26 650 869.95 　 24 806.45 31.75 20.62 33.2
28 700 927.10 　 28 863.60 31.75 22.23 35.5
30 750 984.25 　 28 914.40 31.75 22.23 37.53
32 800 1060.45 　 28 977.90 38.10 23.83 40.16
34 850 1111.25 　 32 1028.70 38.10 23.83 42.19
36 900 1168.40 　 32 1085.85 38.10 25.40 44.48
38 950 1238.25 　 32 1149.35 38.10 25.40 47.06
40 1000 1289.05 　 36 1200.15 38.10 25.40 49.09
42 1050 1346.20 　 36 1257.30 38.10 28.58 51.4
44 1100 1403.35 　 40 1314.45 38.10 28.58 53.7
46 1150 1454.15 　 40 1365.25 38.10 28.58 55.73
48 1200 1511.30 　 44 1422.40 38.10 31.75 58.03
50 1250 1568.45 　 44 1479.55 44.45 31.75 60.38
52 1300 1625.60 　 44 1536.70 44.45 31.75 62.69
54 1350 1682.75 　 44 1593.85 44.45 34.93 64.99
60 1500 1854.20 　 52 1758.95 44.45 38.10 71.63
66 1650 2032.00 　 52 1930.40 44.45 41.28 78.53
72 1800 2197.10 　 60 2095.50 44.45 44.45 85.17
78 1950 2362.20 　 64 2260.60 50.80 50.80 　
84 2100 2533.65 　 64 2425.70 50.80 50.80 　
90 2250 2705.10 　 68 2590.80 57.15 57.15 　
96 2400 2876.55 　 68 2755.90 57.15 57.15 　
102 2550 3048.00 　 72 2908.30 63.50 63.50 　
108 2700 3219.45 　 72 3067.05 63.50 63.50 　
114 2850 3390.90 　 76 3219.45 69.85 69.85 　
120 3000 3562.35 　 76 3371.85 69.85 69.85 　
126 3150 3733.80 　 80 3536.95 76.20 76.20 　
132 3300 3905.25 　 80 3702.05 76.20 76.20 　
144 3600 4248.15 　 84 4019.55 82.55 82.55 　

Dimensions & Weight of steel ring flanges class D AWWA C207

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50             15.88 15.88              15.88           
5 125 254.00 143.76 8 215.90 19.05 15.88 16.51
6 150 279.40 170.69 8 241.30 19.05 17.48 17.59
8 200 342.90 221.49 8 298.45 19.05 17.48 20.62
10 250 406.40 276.35 12 361.95 22.23 17.48 24.21
12 300 482.60 327.15 12 431.80 22.23 20.62 28.37
14 350 533.40 360.43 12 476.25 25.40 23.83 28.78
16 400 596.90 411.23 16 539.75 25.40 25.40 32.13
18 450 635.00 462.03 16 577.85 28.58 26.97 33.81
20 500 698.50 512.83 20 635.00 28.58 28.58 36.77
22 550 749.30 563.63 20 692.15 31.75 30.18 39.83
24 600 812.80 614.43 20 749.30 31.75 31.75 42.18
26 650 869.95 　 24 806.45 31.75 33.32 45.37
28 700 927.10 　 28 863.60 31.75 33.32 48.4
30 750 984.25 　 28 914.40 31.75 34.93 51
32 800 1060.45 　 28 977.90 38.10 38.10 54.6
34 850 1111.25 　 32 1028.70 38.10 38.10 57.21
36 900 1168.40 　 32 1085.85 38.10 41.28 60.2
38 950 1238.25 　 32 1149.35 38.10 41.28 63.66
40 1000 1289.05 　 36 1200.15 38.10 41.28 66.28
42 1050 1346.20 　 36 1257.30 38.10 44.45 69.32
44 1100 1403.35 　 40 1314.45 38.10 44.45 72.36
46 1150 1454.15 　 40 1365.25 38.10 44.45 74.99
48 1200 1511.30 　 44 1422.40 38.10 47.63 78.03
50 1250 1568.45 　 44 1479.55 44.45 50.80 81.18
52 1300 1625.60 　 44 1536.70 44.45 50.80 84.21
54 1350 1682.75 　 44 1593.85 44.45 53.98 87.25
60 1500 1854.20 　 52 1758.95 44.45 57.15 95.97
66 1650 2032.00 　 52 1930.40 44.45 63.50 105.6
72 1800 2197.10 　 60 2095.50 44.45 66.68 113.8
78 1950 2362.20 　 64 2260.60 50.80 69.85 　
84 2100 2533.65 　 64 2425.70 50.80 73.03 　
90 2250 2705.10 　 68 2590.80 57.15 76.20 　
96 2400 2876.55 　 68 2755.90 57.15 82.55 　
102 2550 3048.00 　 72 2908.30 63.50 82.55 　
108 2700 3219.45 　 72 3067.05 63.50 85.73 　
114 2850 3390.90 　 76 3219.45 69.85 88.90 　
120 3000 3562.35 　 76 3371.85 69.85 88.90 　
126 3150 3733.80 　 80 3536.95 76.20 95.25 　
132 3300 3905.25 　 80 3702.05 76.20 98.43 　
144 3600 4248.15 　 84 4019.55 82.55 104.78 　

Dimensions & Weight of steel ring flanges class E AWWA C207

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50            15.88 15.88            28.58
5 125 254.00 143.76 8 215.90 19.05 19.05 30.18
6 150 279.40 170.69 8 241.30 19.05 19.05 33.35
8 200 342.90 221.49 8 298.45 19.05 19.05 38.1
10 250 406.40 276.35 12 361.95 22.23 22.23 39.7
12 300 482.60 327.15 12 431.80 22.23 22.23 44.45
14 350 533.40 360.43 12 476.25 25.40 25.40 47.63
16 400 596.90 411.23 16 539.75 25.40 25.40 50.8
18 450 635.00 462.03 16 577.85 28.58 28.58 53.98
20 500 698.50 512.83 20 635.00 28.58 28.58 60.33
22 550 749.30 563.63 20 692.15 31.75 31.75 63.5
24 600 812.80 614.43 20 749.30 31.75 31.75 66.68
26 650 869.95 　 24 806.45 31.75 31.75 69.85
28 700 927.10 　 28 863.60 31.75 31.75 69.85
30 750 984.25 　 28 914.40 31.75 31.75 73.03
32 800 1060.45 　 28 977.90 38.10 38.10 76.2
34 850 1111.25 　 32 1028.70 38.10 38.10 77.46
36 900 1168.40 　 32 1085.85 38.10 38.10 81.51
38 950 1238.25 　 32 1149.35 38.10 38.10 86.2
40 1000 1289.05 　 36 1200.15 38.10 38.10 89.74
42 1050 1346.20 　 36 1257.30 38.10 38.10 93.86
44 1100 1403.35 　 40 1314.45 38.10 38.10 97.97
46 1150 1454.15 　 40 1365.25 38.10 38.10 101.53
48 1200 1511.30 　 44 1422.40 38.10 38.10 105.65
50 1250 1568.45 　 44 1479.55 44.45 44.45 109.9
52 1300 1625.60 　 44 1536.70 44.45 44.45 114.02
54 1350 1682.75 　 44 1593.85 44.45 44.45 118.14
60 1500 1854.20 　 52 1758.95 44.45 44.45 129.95
66 1650 2032.00 　 52 1930.40 44.45 44.45 142.26
72 1800 2197.10 　 60 2095.50 44.45 44.45 154.08
78 1950 2362.20 　 64 2260.60 50.80 50.80 　
84 2100 2533.65 　 64 2425.70 50.80 50.80 　
90 2250 2705.10 　 68 2590.80 57.15 57.15 　
96 2400 2876.55 　 68 2755.90 57.15 57.15 　
102 2550 3048.00 　 72 2908.30 63.50 63.50 　
108 2700 3219.45 　 72 3067.05 63.50 63.50 　
114 2850 3390.90 　 76 3219.45 69.85 69.85 　
120 3000 3562.35 　 76 3371.85 69.85 69.85 　
126 3150 3733.80 　 80 3536.95 76.20 76.20 　
132 3300 3905.25 　 80 3702.05 76.20 76.20 　
144 3600 4248.15 　 84 4019.55 82.55 82.55 　

Dimensions & Weight of steel ring flanges class F AWWA C207

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 254.00 116.08 8 200.15           19.05 28.70            28.7
5 125 279.40 143.76 8 234.95 19.05 30.73 30.73
6 150 317.50 170.94 12 269.75 19.05 33.27 33.27
8 200 381.00 221.74 12 330.20 22.23 33.27 33.27
10 250 444.50 276.35 16 387.35 25.40 38.10 38.1
12 300 520.70 327.15 16 450.85 28.58 41.40 41.4
14 350 584.20 360.43 20 514.35 28.58 49.28 49.28
16 400 647.70 411.23 20 571.50 31.75 54.36 54.36
18 450 711.20 462.03 24 628.65 31.75 57.15 57.125
20 500 774.70 512.83 24 685.80 31.75 59.18 59.18
22 550 838.20 563.63 24 742.95 31.75 63.50 63.5
24 600 914.40 614.43 24 812.80 38.10 68.33 68.53
26 650 971.55 　 28 876.30 44.45 76.20 76.2
28 700 1035.05 　 28 939.80 44.45 79.50 79.5
30 750 1092.20 　 28 996.95 44.45 80.01 80.42
32 800 1149.35 　 28 1054.10 44.45 82.55 84.62
34 850 1206.50 　 28 1104.90 44.45 85.85 88.25
36 900 1270.00 　 32 1168.40 50.80 87.88 93.25
38 950 1327.15 　 32 1219.20 50.80 88.90 96.9
40 1000 1377.95 　 36 1276.35 50.80 92.20 101.4
42 1050 1447.80 　 36 1339.85 50.80 96.77 105.92
44 1100 1504.95 　 36 1397.00 50.80 101.60 110.19
46 1150 1562.10 　 40 1454.15 50.80 104.90 114.43
48 1200 1651.00 　 40 1543.05 50.80 114.30 121.44

Dimensions & Weight of BS 4504 Standard Flange Facing

DN A mm       Face Dimensions      
PN 2.5 PN 6 PN 10 PN 16 PN 25 PN 40 B mm C mm D mm E mm a mm b mm c mm d mm αmm e mm
10 35 35 40 40 40 40 34 35 24 23 2 4 3 2 – 5
15 40 40 45 45 45 45 39 40 29 28 2 4 3 2 – 5
20 50 50 58 58 58 58 50 51 36 35 2 4 3 2 41°16′ 5
25 60 60 68 68 68 68 57 58 43 42 2 4 3 2 41°16′ 5
32 70 70 78 78 78 78 65 66 51 50 2 4 3 2 41°16′ 5
40 80 80 88 88 88 88 75 76 61 60 3 4 3 2 41°16′ 5
50 90 90 102 102 102 102 87 88 73 72 3 4 3 2 41°16′ 5
65 110 110 122 122 122 122 109 110 95 94 3 4 3 2 41°16′ 5
80 128 128 138 138 138 138 120 121 106 105 3 4 3 2 41°16′ 5
100 148 148 158 158 162 162 149 150 129 128 3 4.5 3.5 2.5 32°15′ 6
125 178 178 188 188 188 188 175 176 155 154 3 4.5 3.5 2.5 32°15′ 6
150 202 202 212 212 218 218 203 204 183 182 3 4.5 3.5 2.5 32°15′ 6
200 258 258 268 268 278 285 259 260 239 238 3 4.5 3.5 2.5 32°15′ 6
250 312 312 320 320 335 345 312 313 292 291 3 4.5 3.5 2.5 32°15′ 6
300 365 365 370 378 395 410 363 364 343 342 4 4.5 3.5 2.5 32°15′ 6
350 415 415 430 438 450 465 421 422 395 394 4 5 4 3 27°24′ 7
400 465 465 482 490 505 535 473 474 447 446 4 5 4 3 27°24′ 7
450 520 520 532 550 555 560 523 524 497 496 4 5 4 3 27°24′ 7
500 570 570 585 610 615 615 575 576 549 548 4 5 4 3 27°24′ 7
600 670 670 685 725 720 735 675 676 649 648 5 5 4 3 27°24′ 7
700 775 775 800 795 820 – 777 778 751 750 5 5 4 3 27°24′ 7
800 880 880 905 900 930 – 882 883 856 855 5 5 4 3 27°24′ 7
900 980 980 1005 1000 1030 – 987 988 961 960 5 5 4 3 27°24′ 7
1000 1080 1080 1110 1115 1140 – 1092 1094 1062 1060 5 6 5 4 28°39′ 8
1200 1280 1295 1330 1330 1350 – 1292 1294 1262 1260 5 6 5 4 28°39′ 8
1400 1480 1510 1535 1530 1560 – 1492 1494 1462 1460 5 6 5 4 28°39′ 8
1600 1690 1710 1760 1750 1780 – 1692 1694 1662 1660 5 6 5 4 28°39′ 8
1800 1890 1920 1960 1950 1985 – 1982 1894 1862 1860 5 6 5 4 28°39′ 8
2000 2090 2125 2170 2150 2210 – 2092 2094 2062 2060 5 6 5 4 28°39′ 8

Dimensions & Weight of BS 4504 Standard Flange Drilling

BS 4504 Standard Flange Drilling Dimensions and weights
DN PN A B C Bolt Holes
　 　 mm mm mm No. Bolt size
350 2.5 & 6 490 445 22 12 M20
10 505 460 22 16 M20
16 520 470 26 16 M24
25 555 490 33 16 M30
40 580 510 36 16 M33
400 2.5 & 6 540 495 22 16 M20
10 565 515 26 16 M24
16 580 525 30 16 M27
25 620 550 36 16 M33
40 660 585 39 16 M36
450 2.5 & 6 595 550 22 16 M20
10 615 565 26 20 M24
16 640 585 30 20 M27
25 670 600 36 20 M33
40 685 610 39 20 M36
500 2.5 & 6 645 610 22 20 M20
10 670 620 26 20 M24
16 715 650 33 20 M30
25 730 660 36 20 M33
40 755 670 42 20 M39
600 2.5 & 6 755 705 26 20 M24
10 780 725 30 20 M27
16 840 770 36 20 M33
25 845 770 39 20 M36
40 890 795 48 20 M45
700 2.5 & 6 860 810 26 24 M24
10 895 840 30 24 M27
16 910 840 36 24 M33
25 960 875 42 24 M39
800 2.5 & 6 975 920 30 24 M27
10 1015 950 33 24 M30
16 1025 950 39 24 M36
25 1085 990 48 24 M45
900 2.5 & 6 1075 1020 30 24 M27
10 1115 1050 33 28 M30
16 1125 1050 39 28 M36
25 1185 1090 48 28 M45
1000 2.5 & 6 1175 1120 30 28 M27
10 1230 1160 36 28 M33
16 1255 1170 42 28 M39
25 1320 1210 56 28 M52
1200 2.5 1375 1320 30 32 M27
6 1405 1340 33 32 M30
10 1455 1380 39 32 M36
16 1485 1390 48 32 M45
25 1530 1420 56 32 M52
1400 2.5 1575 1520 30 36 M27
6 1630 1560 36 36 M33
10 1675 1590 42 36 M39
16 1685 1590 48 36 M45
25 1755 1640 62 36 M56
1600 2.5 1790 1730 30 40 M27
6 1830 1760 36 40 M33
10 1915 1820 48 40 M45
16 1930 1820 56 40 M52
25 1975 1860 62 40 M56
1800 2.5 1990 1930 30 44 M27
6 2045 1970 39 44 M36
10 2115 2020 48 44 M45
16 2130 2020 56 44 M52
25 2185 2070 70 44 M64
2000 2.5 2190 2130 30 48 M27
6 2265 2180 42 48 M39
10 2325 2230 48 48 M45
16 2345 2230 62 48 M56
25 2425 2300 70 48 M64

Dimensions & Weight of BS 4504 Standard Code 101 Plate Flange

DN PN A mm B mm C mm
10 2.5, 6 75 12 18
10 &16 90 14
25 & 40 90 14
15 2.5 & 6 80 12 22
10 &16 95 14
　 25 & 40 95 14
20 2.5 & 6 90 14 27.5
10 &16 105 16
25 & 40 105 16
25 2.5 & 6 100 14 34.5
10 &16 115 16
25 & 40 115 16
32 2.5 & 6 120 16 43.5
10 &16 140 18
25 & 40 140 18
40 2.5 & 6 130 16 49.5
10 &16 150 18
25 & 40 150 18
50 2.5 & 6 140 16 61.5
10 & 16 165 20
25 & 40 165 20
65 2.5 & 6 160 16 77.5
10 & 16 185 20
25 & 40 185 22
80 2.5 & 6 190 18 90.5
10 &16 200 20
25 & 40 200 24
100 2.5 & 6 210 18 116
10 &16 220 22
25 & 40 235 26
125 2.5 & 6 240 20 141.5
10 & 16 250 22
25 & 40 270 28
150 2.5 & 6 265 20 170.5
10 & 16 285 24
25 & 40 300 30
200 2.5 & 6 320 22 221.5
10 &16 340 24
25 360 32
40 375 36
250 2.5 & 6 375 24 276.5
10 395 26
16 405 29
25 425 35
40 450 42
300 2.5 & 6 440 24 327.5
10 445 26
16 460 32
25 485 38
40 515 48
350 2.5 & 6 490 26 359.5
10 505 28
16 520 35 359
25 555 42 359.5
40 580 54
400 2.5 & 6 540 28 411
10 565 32
16 580 38
25 620 46
40 660 60
450 2.5 & 6 595 30 462
10 615 36
16 640 42
25 670 50
40 685 66
500 2.5 & 6 645 30 513.5
10 670 38
16 715 46
25 730 56
40 755 72
600 2.5 & 6 755 32 616.5
10 780 42
16 840 52
25 845 68
40 890 84
700 2.5 860 36 To be specifiedby purchaser
800 2.5 975 38
900 2.5 1075 40
1000 2.5 1175 42
1200 2.5 1375 44
1400 2.5 1575 48
1600 2.5 1790 51
1800 2.5 1990 54
2000 2.5 2190 58

Dimensions & Weight of BS 4504 Standard Code 111 Weld Neck Flange

DN PN A mm B mm C mm D mm E mm F mm G mm H mm
10 2.5,6 75 17.2 12 28 6 26 3 1.8
10 90 14 35 　 28 1.8
16 90 14 35 　 28 1.8
25 90 16 35 　 28 1.8
40 90 16 35 　 28 1.8
15 2.5,6 80 21.3 12 30 6 30 3 2
10 95 14 35 32 2
16 95 14 35 32 2
25 95 16 38 32 2
40 95 16 38 32 2
20 2.5,6 90 26.9 14 32 6 38 4 2.3
10 105 16 38 39 2.3
16 105 16 38 39 2.3
25 105 18 40 40 2.3
40 105 18 40 40 2.3
25 2.5,6 100 33.7 14 35 6 42 4 2.6
10 115 16 38 46 2.6
16 115 16 38 46 2.6
25 115 18 40 46 2.6
40 115 18 40 46 2.6
32 2.5,6 120 42.4 14 35 6 55 5 2.6
10 140 16 40 56 2.6
16 140 16 40 56 2.6
25 140 18 42 56 2.6
40 140 18 42 56 2.6
40 2.5,6 130 48.3 14 38 7 62 5 2.6
10 150 16 42 64 2.6
16 150 16 42 64 2.6
25 150 18 45 64 2.6
40 150 18 45 64 2.6
50 2.5,6 140 60.3 14 38 8 74 5 2.9
10 165 18 45 74 2.9
16 165 18 45 74 2.9
25 165 20 48 74 2.9
40 165 20 48 74 2.9
65 2.5,6 160 76.1 14 38 9 88 6 2.9
10 185 18 45 10 92 2.9
16 185 18 45 92 2.9
25 185 22 52 92 2.9
40 185 22 52 92 2.9
80 2.5,6 190 88.9 16 42 10 102 6 3.2
10 200 20 50 110 3.2
16 200 20 50 12 110 3.2
25 200 24 58 110 3.2
40 200 24 58 110 3.2

Dimensions & Weight of BS 4504 Standard Code 112 Slip On Flange

BS 4504 Standard Code 112 Slip On Flange Dimensions and weights
DN PN A mm B mm C mm D mm  E mm F mm
200 6 320 221.5 20 44 240 8
10 &16 340 24 44 246
25 360 30 52 256
40 375 34 52 260
250 6 375 276.5 22 44 295 10
10 395 26 46 298
16 405 26 46 298
25 425 32 60 310
40 450 38 60 312
300 6 440 327.5 22 44 355 10
10 445 26 46 350
16 460 28 46 350
25 485 34 67 364
40 515 42 67 380
350 10 505 359.5 26 53 400 10
16 520 359 30 57 400
25 555 359.5 38 72 418
40 580 46 72 424
400 10 565 411 26 57 456 10
16 580 32 63 456
25 620 40 78 472
40 660 50 78 478
450 10 615 462 28 63 502 12
16 640 34 68 502
25 670 42 84 520
40 685 50 84 522
500 10 670 513.5 28 67 559 12
16 715 34 73 559
25 730 44 90 580
40 755 52 90 576
600 10 780 616.5 28 75 658 12
16 840 36 83 658
25 845 46 100 684
40 890 60 100 686

Dimensions & Weight of BS 4504 Code 113 Threaded Flange

BS 4504 Code 113 Threaded Flange Dimensions and weights
DN PN A mm B mm C mm D mm E mm
10 6 75 25 12 20 3
16 90 30 14 20
40 90 30 16 22
15 6 80 30 12 20 3
16 95 35 14 20
40 95 35 16 22
20 6 90 40 14 24 4
16 105 45 16 24
40 105 45 18 26
25 6 100 50 14 24 4
16 115 52 16 24
40 115 52 18 28
32 6 120 60 14 26 5
16 140 60 16 26
40 140 60 18 30
40 6 130 70 14 26 5
16 150 70 16 26
40 150 70 18 32
50 6 140 80 14 28 5
16 165 84 18 28
40 165 84 20 34
65 6 160 100 14 32 6
16 185 104 18 32
40 185 104 22 38
80 6 190 110 16 34 6
16 200 118 20 34
40 200 118 24 40
100 6 210 130 16 40 6
16 220 140 20 40
40 235 145 24 44
DN PN A mm B mm C mm D mm E mm
125 6 240 160 18 44 6
16 250 168 22 44
40 270 170 26 48
150 6 265 185 18 44 8
16 285 195 22 44
40 300 200 28 52
200 6 320 240 20 44 8
16 340 246 24 44
40 375 260 34 52
250 6 375 295 22 44 10
16 405 298 26 46
40 450 312 38 60
300 6 440 355 22 44 10
16 460 350 28 46
40 515 380 42 67
350 16 520 400 30 57 10
40 580 424 46 72
400 16 580 456 32 63 10
40 660 478 50 78
450 16 640 502 34 68 12
40 685 522 50 84
500 16 715 559 34 73 12
40 755 576 52 90
600 16 840 658 36 83 12
40 890 686 60 100
700 16 910 760 36 83 12
800 16 1025 864 38 90 12
900 16 1125 968 40 94 12
1000 16 1255 1072 42 100 12

Dimensions & Weight of BS 4504 Standard Code 105 Blank Flange (Blind Flange)

BS 4504 Standard Code 105 Blank Flange (Blind Flange) Dimensions and weights
DN PN A mm B mm  C mm 
10 2.5, 6 75 12 –
10 &16 90 14 –
25 & 40 90 16 –
15 2.5 & 6 80 12 –
10 &16 95 14 –
25 & 40 95 16 –
20 2.5 & 6 90 14 –
10 &16 105 16 –
25 & 40 105 18 –
25 2.5 & 6 100 14 –
10 &16 115 16 –
25 & 40 115 18 –
32 2.5 & 6 120 14 –
10 &16 140 16 –
25 & 40 140 18 –
40 2.5 & 6 130 14 –
10 &16 150 16 –
25 & 40 150 18 –
50 2.5 & 6 140 14 –
10 & 16 165 18 –
25 & 40 165 20 –
65 2.5 & 6 160 14 55
10 & 16 185 18 55
25 & 40 185 22 55
80 2.5 & 6 190 16 70
10 &16 200 20 70
25&40 200 24 70
100 2.5 & 6 210 16 90
10 &16 220 20 90
25&40 235 24 90
125 2.5 & 6 240 18 115
10 & 16 250 22 115
25 & 40 270 26 115
150 2.5 & 6 265 18 140
10 & 16 285 22 140
25 & 40 300 28 140
200 2.5 & 6 320 20 190
10 &16 340 24 190
25 360 30 190
40 375 34 190
250 2.5 & 6 375 22 235
10 395 26 235
16 405 26 235
25 425 32 235
40 450 38 235
DN PN A mm B mm  C mm 
300 2.5 & 6 440 22 285
10 445 26 285
16 460 28 285
25 485 34 285
40 515 42 285
350 2.5 & 6 490 22 325
10 505 26 325
16 520 30 325
25 555 38 325
40 580 46 325
400 2.5 & 6 540 22 375
10 565 26 375
16 580 32 375
25 620 40 375
40 660 50 375
450 2.5 & 6 595 24 425
10 615 28 425
16 640 34 425
25 670 42 425
40 685 54 425
500 2.5 & 6 645 24 475
10 670 28 475
16 715 36 475
25 730 45 475
40 755 56 475
600 2.5 & 6 755 34 575
10 780 34 575
16 840 44 575
25 845 54 575
40 890 70 575
700 2.5 860 36 –
6 860 38 –
10 895 38 670
16 910 48 670
800 2.5 975 38 –
6 975 42 –
10 1015 42 770
16 1025 52 770
900 2.5 1075 40 –
6 1075 46 –
10 1115 46 860
16 1125 58 860
1000 2.5 1175 42 –
6 1175 52 –
10 1230 52 960
16 1255 64 960
1200 2.5 1375 44 –
6 1405 60 –
10 1455 60 1160
16 1485 76 1160
1400 2.5 1575 48 –
6 1630 68 –
1600 2.5 1790 51 –
6 1830 76 –
1800 2.5 1990 54 –
6 2045 84 –
2000 2.5 2190 58 –
6 2265 92 –

Dimensions & Weight of BS 10 Standard Table D,Table E,Table F,Table H Flange

British Standard BS 10 : 1962 – Specification for Flanges and Bolting for Pipes, Valves, and Fittings. This covers plain, boss, integrally cast or forged, and welding neck type flanges, in ten tables. Although BS 10 is obsolescent, it remains in use for the dimensions of light duty, economy stainless steel flanges in applications where corrosion resistance and/or hygiene, rather than high pressures and temperatures, are the primary considerations. The following tables detail the applicable standard dimensions from Tables D, E, F and H of BS 10.

BS 10 Standard Table D,Table E,Table F,Table H Flange Dimensions and weights

Dimensions & Weight of Tables D and E of BS 10 : 1962

Tables D and E of BS 10 : 1962 Flange Dimensions and weights

Dimensions & Weight of Tables F and H of BS 10 : 1962

Tables F and H of BS 10 : 1962 Flange Dimensions and weights

UNI Flange Standard

UNI 2225-67 esecuzione SM* E SF** (DIN 2513 FORM V 13) and (DIN 2513 FORM R 13) Weld neck flanges
UNI 2226-67 esecuzione DM * E DF ** (DIN 2512 FORM F) and (DIN 2512 FORM N) Weld neck flanges
UNI 2229-67 (DIN 2526 FORM C) Weld neck flanges
UNI 2253-67 PN 6 and UNI 2254-67 PN 16 BSPT Threaded Flange with collar
UNI 2255-67 PN 40, UNI 2256-67 PN 64 and UNI 2257-67 PN 100 BSPT Threaded Flange with hub
UNI 2276-67 PN6 (DIN 2575 ND6), UNI 2277-67 PN10 (DIN 2576 ND10), UNI 2278-67 PN16 (DIN 2577 ND 16) Flat flange for welding (slip on)
UNI 2280-67 PN 6 (DIN 2631 ND6) Weld neck flanges
UNI 2281-67 PN10 (DIN 2632 ND10) Weld neck flanges
UNI 2282-67 PN 16 (DIN 2633 ND16) Weld neck flanges
UNI 2283-67 PN25 (DIN 2634 ND25) Weld neck flanges
UNI 2284-67 PN 40 (DIN 2635 ND40) Weld neck flanges
UNI 2285-67 PN64 and UNI 2286-67 PN100 Weld neck flanges
UNI 2289-67 PN 6, UNI 2290-67 PN 10 and UNI 2291-67 PN 16 Weld neck flange collar to weld head
UNI 2292-67 PN 25 and UNI 2293-67 PN 40 Weld neck flange collar to weld head
UNI 2299-67 PN 25 and UNI 2300-67 PN 40 Weld Flange with support collar to weld head
UNI 6083-67 PN 25 – UNI 6084-67 PN 40 Flat plain slip-on flange
UNI 6088-67 PN 6 (DIN 2641 ND 6) Lap joint flanges
UNI 6089-67 PN 10 and UNI 6090-67 PN 16 (DIN 2641 ND 6) Lap joint flanges
UNI 6089 PN 10 Lap joint flanges in aluminium (DIN 2642 ND 10)
UNI 6091-67 PN 6 (DIN 2527 ND 6) Blind Flange
UNI 6092-67 PN 10 (DIN 2527 ND10) Blind Flange
UNI 6093-67 PN 16 (DIN 2527 ND 16) Blind Flange
UNI 6094-67 PN 25 and UNI 6095-67 PN 40 Blind Flanges
UNI 6096-67 PN 64 and UNI 6097- 67 PN 100 Blind Flanges
UNI 6098-67 PN 160 and UNI 6099-67 PN 250 Blind Flanges 
UNI 6100-67 Flange Tolerances 
UNI Flange Bolting Specifications

Dimensions & Weight of API 6A – TYPE – 6B 13.8 MPA Flange (2000 PSI)

API 6A – TYPE – 6B 13.8 MPA Flange (2000 PSI) Dimensions and weights
Size B OD C (MAX.) K P E T Q X BC N H LN HL JL Ring Number
R or RX
2 1/16˝ 2 9/16˝ 3 1/8˝ 4 1/16˝ 5 1/8˝ 7 1/16˝ 9˝ 11˝ 13 5/8˝ 16 3/4˝ 21 1/4˝ 53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2 346.9 426.2 540.5 165 190 210 275 330 355 420 510 560 685 815 3 3 3 3 3 6 6 6 6 6 6 108 127 146 175 210 241 302 356 413 508 635 82.55 101.60 123.83 149.23 180.98 211.15 269.88 323.85 381.00 469.90 584.20 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 9.7 33.4 36.6 39.7 46.1 52.4 55.6 63.5 71.5 74.7 84.2 98.5 25.4 28.6 31.8 38.1 44.5 47.6 55.6 63.5 66.7 76.2 88.9 84 100 117 152 189 222 273 343 400 495 610 127 149.2 168.3 215.9 266.7 292.1 349.3 431.8 489 603.2 723.9 8 8 8 8 8 12 12 16 20 20 24 20 23 23 26 29 29 32 35 35 42 45 81 88 91 110 122 126 141 160 — 60.3 73.0 88.9 114.3 141.3 168.3 219.1 273.0 — 53.3 63.5 78.7 103.1 122.9 147.1 199.1 248.4 — 23 26 31 37 41 45 49 53 57 65 73

Dimensions & Weight of API 6A – TYPE – 6B 20.7 MPA (3000 PSI)

API 6A – TYPE – 6B 20.7 MPA (3000 PSI) Dimensions and weights
Size B OD C (MAX.) K P E T Q X BC N H LN HL JL Ring Number
R or RX
2 1/16˝ 2 9/16˝ 3 1/8˝ 4 1/16˝ 5 1/8˝ 7 1/16˝ 9˝ 11˝ 13 5/8˝ 16 3/4˝ 20 3/4˝ 53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2 346.9 426.2 527.8 215 245 240 290 350 380 470 545 610 705 855 3 3 3 3 3 6 6 6 6 6 6 124 137 156 181 216 241 308 362 419 524 648 95.25 107.95 123.83 149.23 180.98 211.15 269.88 323.85 381.00 469.90 584.20 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 11.2 12.7 46.1 49.3 46.1 52.4 58.8 63.5 71.5 77.8 87.4 100.1 120.7 38.1 41.3 38.1 44.4 50.8 55.6 63.5 69.9 79.4 88.9 108 104.8 123.8 127.0 158.8 190.5 235.0 298.5 368.3 419.1 508.0 622.3 165.1 190.5 190.5 235.0 279.4 317.5 393.7 469.9 533.4 616.0 749.3 8 8 8 8 8 12 12 16 20 20 20 26 29 26 32 35 32 39 39 39 45 54 109.6 112.7 109.5 122.2 134.9 147.6 169.9 192.1 — 60.3 73.0 88.9 114.3 141.3 168.3 219.1 273 — 50.0 59.7 74.4 98.0 122.9 147.1 189.7 237.2 — 24 27 31 37 41 45 49 53 57 66 74

Dimensions & Weight of API 6A – TYPE – 6B 34.5 (5000 PSI)

API 6A – TYPE – 6B 34.5 (5000 PSI) Dimensions and weights
Size B OD C (MAX.) K P E T Q X BC N H LN HL JL Ring Number
R or RX
2 1/16˝ 2 9/16˝ 3 1/8˝ 4 1/16˝ 5 1/8˝ 7 1/16˝ 9˝ 11˝ 53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2 215 245 265 310 375 395 485 585 3 3 3 3 3 6 6 6 124 137 168 194 229 248 318 371 95.25 107.95 136.53 161.93 193.68 211.15 269.88 323.85 7.9 7.9 7.9 7.9 7.9 9.7 11.2 11.2 46.1 49.3 55.6 62 81 92.1 103.2 119.1 38.1 41.3 47.7 54 73.1 82.6 92.1 108 104.8 123.8 133.3 161.9 196.8 228.6 292.1 368.3 165.1 190.5 203.2 241.3 292.1 317.5 393.7 482.6 8 8 8 8 8 12 12 12 26 29 32 35 42 39 45 51 109.5 112.7 125.4 131.8 163.5 181 223.8 265.1 60.3 73.0 88.9 114.3 141.3 168.3 219.1 273.1 43.7 54.9 67.5 88.1 110.3 132.6 173.8 216.7 24 27 35 39 44 46 50 54

Dimensions & Weight of API 6A – TYPE – 6BX 13.8 MPA Flange (2000 PSI)

API 6A – TYPE – 6BX 13.8 MPA (2000 PSI) Dimensions and weights
Size OD C E1 G K T J1 J4 R BC N H Ring Number
BX

26 3/4˝ 30˝

1040 1120

6

6

21.4

23

768.33 862.3

805

908

126.3 134.2

835.8 931.9

9.7

17.5

16

16

952.5 1039.80

20

32

48

45

167

303

Dimensions & Weight of API 6A – TYPE – 6BX 20.7 MPA Flange (3000 PSI)

API 6A – TYPE – 6B 20.7 MPA (3000 PSI) Dimensions and weights
Size OD C E1 G K T J1 J4 R BC N H Ring Number
BX

26 3/4˝ 30˝

1100 1185

6

6

21.4

23

774.22 862.30

832

922

161.2 167.1

870

970

0

12.7

16

16

1000.10 1090.60

24

32

54

51

168

303

Dimensions & Weight of API 6A – TYPE – 6BX 34.5 MPA Flange (5000 PSI)

API 6A – TYPE – 6BX 34.5 MPA Flange (5000 PSI) Dimensions and weights
Size OD C E1 G K T J1 J4 R BC N H Ring Number
BX

13 5/8˝

675

6

14.3

408.00

457

112.8

481.0

23.9

16

590.60

16

45

160

16 3/4˝

770

6

8.3

478.33

535

130.2

555.6

17.5

19

676.30

16

51

162

18 3/4˝

905

6

18.3

563.50

627

165.9

674.7

19.1

16

803.30

20

54

163

21 1/4˝

990

6

19.1

632.56

702

181.0

758.8

22.4

18

885.80

24

54

165

Dimensions & Weight of API 6A – TYPE – 6BX 69.0 MPA Flange (10000 PSI)

API 6A – TYPE – 6BX 69.0 MPA Flange (10000 PSI) Dimensions and weights
Size B OD C E1 Q (MAX.) G K T J1 J2 J3 J4 R BC N H Ring Number
BX

1 13/16˝

46.8

185

3

–

5.56

77.77

105

42.1

88.9

65.1

48.5

–

10

146.10

8

23

151

2 1/16˝

53.2

200

3

–

5.95

86.23

111

44.1

100.0

74.7

51.6

–

10

158.80

8

23

152

2 9/16˝

65.9

230

3

–

6.75

102.77

132

51.2

120.7

92.1

57.2

–

10

184.20

8

26

153

3 1/16˝

78.6

270

3

–

7.54

119.00

152

58.4

142.1

110.2

63.5

–

10

215.90

8

29

154

4 1/16˝

104.0

315

3

–

8.33

150.62

185

70.3

182.6

146.1

73.1

–

10

258.80

8

32

155

5 1/8˝

131.0

360

3

9.5

9.53

176.66

221

79.4

223.8

182.6

81.0

6.4

10

300.00

12

32

169

7 1/16˝

180.2

480

6

11.1

11.11

241.83

302

103.2

301.6

254.0

95.3

9.7

16

403.20

12

42

156

9 ˝

229.4

550

6

12.7

12.70

299.06

359

123.9

374.7

327.1

93.7

9.7

16

476.30

16

42

157

11˝

280.2

655

6

14.3

14.29

357.23

429

141.3

450.9

400.1

103.2

14.2

16

565.20

16

48

158

13 5/8˝

346.9

770

6

15.9

15.88

432.64

518

168.3

552.5

495.3

114.3

17.5

16

673.10

20

51

159

16 3/4˝

426.2

870

6

8.3

8.33

478.33

576

168.3

655.6

601.7

76.2

30.2

19

776.30

24

51

162

18 3/4˝

477.0

1040

6

18.3

18.26

577.90

697

223.1

752.5

674.7

155.6

25.4

16

925.50

24

61

164

21 1/4˝

540.5

1145

6

19.1

19.05

647.88

781

241.3

847.7

762.0

165.1

31.8

21

1022.40

24

67

166

Dimensions & Weight of API 6A – TYPE – 6BX 103.5 MPA Flange (15000 PSI)

Size B OD C E1 Q (MAX.) G K T J1 J2 J3 J4 R BC N H Ring Number
BX

1 13/16˝

46.8

210

3

–

5.56

77.77

106

45.3

97.6

71.4

47.6

–

10

160.3

8

26

151

2 1/16˝

53.2

220

3

–

5.95

86.23

114

50.8

111.1

82.5

54.0

–

10

174.60

8

26

152

2 9/16˝

65.9

255

3

–

6.75

102.77

133

57.2

128.6

100.0

57.1

–

10

200.00

8

29

153

3 1/16˝

78.6

290

3

–

7.54

119.00

154

64.3

154.0

122.2

63.5

–

10

230.20

8

32

154

4 1/16˝

104.0

360

3

–

8.33

150.62

194

78.6

195.3

158.7

73.0

–

10

290.50

8

39

155

5 1/8˝

131.0

420

3

9.5

9.53

176.66

225

98.5

244.5

200.0

81.8

6.4

16

342.90

12

42

169

7 1/16˝

180.2

505

6

11.1

11.11

241.83

305

119.1

325.4

276.2

92.1

7.9

16

428.60

16

42

156

9 ˝

229.4

650

6

12.7

12.70

299.06

381

146.1

431.8

349.2

123.8

14.2

16

552.40

16

51

157

11˝

280.2

815

6

14.3

14.29

357.23

454

187.4

584.2

427.0

235.7

12.7

16

711.20

20

54

158

13 5/8˝

346.9

885

6

15.9

15.88

432.64

541

204.8

595.3

528.6

114.3

17.5

25

771.50

20

61

159

18 3/4˝

477.0

1160

6

18.3

18.26

577.90

722

255.6

812.8

730.2

155.6

35.1

25

1016.00

20

80

164

Dimensions & Weight of API 6A – TYPE – 6BX 103.5 MPA Flange (20000 PSI)

Size B OD C E1 Q (MAX.) G K T J1 J2 J3 J4 R BC N H Ring Number
BX

1 13/16˝

46.8

255

3

–

5.56

77.77

117

63.5

133.4

109.5

49.2

–

10

203.20

8

29

151

2 1/16˝

53.2

285

3

–

5.95

86.23

132

71.5

154.0

127.0

52.4

–

10

230.20

8

32

152

2 9/16˝

65.9

325

3

–

6.75

102.77

151

79.4

173.0

144.5

58.7

–

10

261.90

8

35

153

3 1/16˝

78.6

355

3

–

7.54

119.00

171

85.8

192.1

160.3

63.5

–

10

287.30

8

39

154

4 1/16˝

104.0

445

3

–

8.33

150.62

219

106.4

242.9

206.4

73.0

–

10

357.20

8

48

155

7 1/16˝

180.2

655

6

11.1

11.11

241.83

352

165.1

385.8

338.1

96.8

7.9

16

554.00

16

54

156

9 ˝

229.4

805

6

12.7

12.7

299.06

441

204.8

481.0

428.6

107.9

6.4

25

685.80

16

67

157

11˝

280.2

885

6

14.3

14.29

357.23

505

223.9

566.7

508.0

103.2

12.7

25

749.30

16

74

158

13 5/8˝

346.9

1160

6

15.9

15.88

432.64

614

292.1

693.7

628.6

133.3

14.2

25

1016.00

20

80

159

Dimensions & Weight of GOST/ГОСТ 12820 Plane flange/Flat flange (PN6 0.6Mpa)

GOST/ГОСТ 12820 Plane flange/Flat flange Dimensions and weights
Dn, мм  D, мм  D1, мм  dв, мм  b, мм  d, мм  n-￠  кg 
15  80  55  19  10  11  4  0,33 
20  90  65  26  12  11  4  0,53 
25  100  75  33  12  11  4  0,64 
32  120  90  39  13  14  4  1,01 
40  130  100  46  13  14  4  1,21 
50  140  110  59  13  14  4  1,33 
65  160  130  78  13  14  4  1,63 
80  185  150  91  15  18  4  2,44 
100  205  170  110  15  18  4  2,85 
125  235  200  135  17  18  8  3,88 
150  260  225  161  17  18  8  4,39 
200  315  280  222  19  18  8  5,89 
250  370  335  273  20  18  12  7,67 
300  435  395  325  20  22  12  10,28 
350  485  445  377  22  22  12  12,58 
400  535  495  426  24  22  16  15,20 
500  640  600  530  25  22  16  19,72 
600  755  705  630  25  26  20  26,24 
800  975  920  820  27  30  24  46,14 
1000  1175  1120  1 020  31  30  28  64,36 
1200  1400  1340  1220  34  33  32  99,03 

Dimensions & Weight of GOST/ГОСТ 12820 Plane flange/Flat flange (PN10 1.0Mpa)

Dn, мм  D, мм  D1, мм  dв, мм  b, мм  d, мм  n-￠  кg 
15  95  65  19  10  14  4  0,51 
20  105  75  26  12  14  4  0,74 
25  115  85  33  12  14  4  0,89 
32  135  100  39  14  18  4  1,40 
40  145  110  46  15  18  4  1,71 
50  160  125  59  15  18  4  2,06 
65  180  145  78  17  18  4  2,80 
80  195  160  91  17  18  4  3,19 
100  215  180  110  19  18  8  3,96 
125  245  210  135  21  18  8  5,40 
150  280  240  161  21  22  8  6,62 
200  335  295  222  21  22  8  8,05 
250  390  350  273  23  22  12  10,65 
300  440  400  325  24  22  12  12,90 
350  500  460  377  24  22  16  15,85 
400  565  515  426  26  26  16  21,56 
500  670  620  530  28  26  20  27,70 
600  780  725  630  31  30  20  39,40 
800  1010  950  820  37  33  24  79,16 
1000  1220  1160  1020  43  33  28  118,43 
1200  1455  1380  1220  51  39  32  197,44 

Dimensions & Weight of GOST/ГОСТ 12820 Plane flange/Flat flange (PN16 1.6Mpa)

Dn, мм  D, мм  D1, мм  dв, мм  b, мм  d, мм  n-￠  кg 
15  95  65  19  12  14  4  0,61 
20  105  75  26  14  14  4  0,86 
25  115  85  33  16  14  4  1,17 
32  135  100  39  16  18  4  1,58 
40  145  110  46  17  18  4  1,96 
50  160  125  59  19  18  4  2,58 
65  180  145  78  21  18  4  3,42 
80  195  160  91  21  18  4  3,71 
100  215  180  110  23  18  8  4,73 
125  245  210  135  25  18  8  6,38 
150  280  240  161  25  22  8  7,81 
200  335  295  222  27  22  12  10,10 
250  405  355  273  28  26  12  14,49 
300  460  410  325  28  26  12  17,78 
350  520  470  377  30  26  16  22,88 
400  580  525  426  34  30  16  31,00 
500  710  650  530  44  33  20  57,01 
600  840  770  630  45  39  20  80,03 
800  1 020  950  820  49  39  24  104,41 
1000  1255  1170  1 020  58  45  28  179,37 
1200  1485  1390  1220  71  52  32  297,78 

Dimensions & Weight of GOST/ГОСТ 12820 Plane flange/Flat flange (PN25 2.5Mpa)

Dn, мм D, мм D1, мм dв, мм b, мм d, мм n-￠ кg
15 95 65 19 14 14 4 0,70
20 105 75 26 16 14 4 0,98
25 115 85 33 16 14 4 1,17
32 135 100 39 18 18 4 1,77
40 145 110 46 19 18 4 2,18
50 160 125 59 21 18 4 2,71
65 180 145 78 21 18 8 3,22
80 195 160 91 23 18 8 4,06
100 230 190 110 25 22 8 5,92
125 270 220 135 27 26 8 8,26
150 300 250 161 27 26 8 10,12
200 360 310 222 29 26 12 13,34
250 425 370 273 31 30 12 18,90
300 485 430 325 32 30 16 23,95
350 550 490 377 38 33 16 34,35
400 610 550 426 40 33 16 44,62
500 730 660 530 48 39 20 67,30
600 840 770 630 49 39 20 90,87
800 1075 990 820 63 45 24 181,43

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN10 1.0Mpa)

GOST/ГОСТ 12821 welding neck flange Dimensions and weights
Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 95 65 14 30 19 12 10 33 4 0,58
20 105 75 14 38 26 18 12 36 4 0,87
25 115 85 14 45 33 25 12 38 4 1,05
32 135 100 18 55 39 31 13 40 4 1,54
40 145 110 18 62 46 38 13 42 4 1,83
50 160 125 18 76 58 49 13 42 4 2,26
65 180 145 18 94 77 66 15 45 4 3,17
80 195 160 18 105 90 78 15 47 4 3,67
100 215 180 18 128 110 96 17 48 8 4,70
125 245 210 18 156 135 121 19 57 8 6,71
150 280 240 22 180 161 146 19 57 8 8,17
200 335 295 22 240 222 202 19 58 8 11,35
250 390 350 22 290 278 254 21 60 12 14,64
300 440 400 22 345 330 303 22 60 12 18,66
350 500 460 22 400 382 351 22 60 16 24,00
400 565 515 26 445 432 398 22 60 16 30,00
500 670 620 26 550 535 501 24 65 20 39,20
600 780 725 30 650 636 602 24 65 20 48,80
800 1010 950 33 850 826 792 27 75 24 87,24
1000 1220 1160 33 1050 1028 992 29 80 28 119,19
1200 1455 1380 39 1256 1228 1192 33 90 32 179,91

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN16 1.6Mpa)

Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 95 65 14 30 19 12 12 33 4 0,68
20 105 75 14 38 26 18 12 36 4 0,87
25 115 85 14 45 33 25 12 38 4 1,05
32 135 100 18 55 39 31 13 40 4 1,54
40 145 110 18 64 46 38 13 42 4 1,85
50 160 125 18 76 58 49 13 45 4 2,28
65 180 145 18 94 77 66 15 47 4 3,19
80 195 160 18 110 90 78 17 50 4 4,21
100 215 180 18 130 110 96 17 50 8 4,90
125 245 210 18 156 135 121 19 57 8 6,75
150 280 240 22 180 161 146 19 57 8 8,30
200 335 295 22 240 222 202 21 58 12 11,79
250 405 355 26 292 278 254 23 65 12 17,36
300 460 410 26 346 330 303 24 66 12 22,76
350 520 470 26 400 382 351 28 70 16 32,04
400 580 525 30 450 432 398 32 75 16 43,00
500 710 650 33 559 535 501 38 90 20 70,97
600 840 770 39 660 636 602 41 90 20 99,30
800 1020 950 39 850 826 792 45 95 24 130,57
1 000 1255 1170 45 1060 1 028 992 49 110 28 203,39
1200 1485 1390 52 1268 1228 1192 51 125 32 284,94

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN25 2.5Mpa)

Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 95 65 14 30 19 12 14 33 4 0,79
20 105 75 14 38 26 18 14 34 4 0,97
25 115 85 14 45 33 25 14 36 4 1,18
32 135 100 18 56 39 31 16 43 4 1,83
40 145 110 18 64 46 38 16 45 4 2,19
50 160 125 18 76 58 49 17 45 4 2,78
65 180 145 18 96 77 66 19 50 8 3,71
80 195 160 18 110 90 78 19 52 8 4,44
100 230 190 22 132 110 96 21 58 8 6,51
125 270 220 26 160 135 121 23 65 8 9,41
150 300 250 26 186 161 146 25 68 8 12,52
200 360 310 26 245 222 202 27 75 12 17,44
250 425 370 30 300 278 254 29 75 12 24,40
300 485 430 30 352 330 303 32 80 16 33,29
350 550 490 33 406 382 351 36 85 16 46,57
400 610 550 33 464 432 398 40 100 16 64,81
500 730 660 39 570 535 500 44 100 20 88,91
600 840 770 39 670 636 600 49 115 20 123,70
800 1075 990 45 874 826 790 55 135 24 213,90
1000 1315 1210 56 1 084 1 028 992 59 150 28 312,12
1200 1525 1420 56 1288 1228 1192 62 160 32 387,50

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN40 4.0Mpa)

Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 95 65 14 30 19 12 14 33 4 0,79
20 105 75 14 38 26 18 14 34 4 0,97
25 115 85 14 45 33 25 14 36 4 1,18
32 135 100 18 56 39 31 16 43 4 1,83
40 145 110 18 64 46 38 16 45 4 2,19
50 160 125 18 76 58 48 17 45 4 2,81
65 180 145 18 96 77 66 19 50 8 3,71
80 195 160 18 112 90 78 21 55 8 4,80
100 230 190 22 138 110 96 23 65 8 7,40
125 270 220 26 160 135 120 25 65 8 10,00
150 300 250 26 186 161 145 27 68 8 13,03
200 375 320 30 250 222 200 35 85 12 24,44
250 445 385 33 310 278 252 39 98 12 37,59
300 510 450 33 368 330 301 42 112 16 57,10
350 570 510 33 418 382 351 48 116 16 70,34
400 655 585 39 480 432 398 54 135 16 106,76
500 755 670 45 580 535 495 58 140 20 132,33
600 890 795 52 686 636 595 58 140 20 180,95
800 1135 1030 56 908 826 795 71 190 24 343,69
1000 1360 1250 56 1140 1028 995 77 235 28 540,75
1200 1575 1460 62 1350 1228 1195 80 250 32 690,59

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN63 6.3Mpa)

Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 105 75 14 38 19 12 16 46 4 1,15
20 125 90 18 48 26 18 18 54 4 1,80
25 135 100 18 52 33 25 20 56 4 2,30
32 150 110 22 64 39 31 21 60 4 2,94
40 165 125 22 74 46 37 21 65 4 3,75
50 175 135 22 86 58 47 23 67 4 4,63
65 200 160 22 106 77 64 25 72 8 6,29
80 210 170 22 120 90 77 27 72 8 7,22
100 250 200 26 140 110 94 29 77 8 10,71
125 295 240 30 172 135 118 33 95 8 17,13
150 340 280 33 206 161 142 35 105 8 24,60
200 405 345 33 264 222 198 41 110 12 36,60
250 470 400 39 316 278 246 45 115 12 50,89
300 530 460 39 370 330 294 50 120 16 68,15
350 595 525 39 430 382 342 56 140 16 98,68
400 670 585 45 484 432 386 62 155 16 135,80
500 800 705 52 594 535 485 66 165 20 192,74
600 925 820 56 704 636 585 71 180 20 269,27
800 1165 1050 62 920 826 785 85 225 24 463,87
1000 1415 1290 70 1160 1028 985 92 280 28 980,60
1200 1 665 1 530 78 1386 1 228 1185 95 315 32 1 263,72

Dimensions & Weight of GOST/ГОСТ 12821 welding neck flange (PN100 10Mpa)

Dn, мм D, мм D1, мм d, мм Dm, мм Dn, мм d1, мм b, мм h4, мм n-￠ кg
15 105 75 14 38 19 12 18 46 4 1,26
20 125 90 18 48 26 18 20 51 4 1,98
25 135 100 18 52 33 25 22 56 4 2,48
32 150 110 22 64 39 31 　 60 4 3,05
40 165 125 22 76 46 37 23 67 4 4,06
50 195 145 26 86 58 45 25 68 4 6,03
65 220 170 26 110 77 62 29 80 8 8,52
80 230 180 26 124 90 75 31 87 8 9,91
100 265 210 30 146 110 92 35 97 8 14,65
125 310 250 33 180 135 112 39 112 8 23,32
150 350 290 33 214 161 136 43 125 12 32,87
200 430 360 39 276 222 190 51 140 12 54,24
250 500 430 39 340 278 236 57 160 12 85,24
300 585 500 45 400 330 248 66 180 16 127,78
350 655 560 52 460 382 332 72 195 16 170,94
400 715 620 52 510 432 376 76 200 16 216,44

Dimensions & Weight of GOST/ГОСТ 12836 Blind Flange (PN10 1.0Mpa)

GOST/ГОСТ 12836 Blind Flange Dimensions and weights
NPS WEIGHT PER KG D D1 NO OF HOLES h D4 b D3 D2 h1
15 95 65 45 12 10 14 2 2 4 0.43
20 105 75 58 12 16 14 2 2 4 0.55
25 115 85 68 12 22 14 2 2 4 0.67
32 135 100 78 12 28 18 2 2 4 0.91
40 145 110 88 14 36 18 3 2 4 1.24
50 160 125 102 14 46 18 3 2 4 1.55
65 180 145 122 14 60 18 3 2 4 2.04
80 195 160 138 14 76 18 3 2 4 2.44
100 215 180 158 14 94 18 3 2 8 2.97
125 245 210 188 16 118 18 3 2 8 4.69
150 280 240 212 16 142 23 3 2 8 6.07
200 335 295 268 16 196 23 3 2 8 9.09
250 390 350 320 18 244 23 3 2 12 14.26
300 440 400 370 20 294 23 4 3 12 19.88
350 500 460 430 24 344 23 4 3 16 31.94
400 565 515 482 26 390 27 4 3 16 44.43
500 670 620 585 30 490 27 4 3 20 74.31
600 780 725 685 34 590 30 5 4 20 119.27
800 1010 950 905 42 780 33 5 4 24 242.06
1000 1220 1160 1110 50 980 33 5 4 28 429.64
1200 1455 1380 1325 55 1180 40 5 4 32 673.13

Dimensions & Weight of GOST/ГОСТ 12836 Blind Flange (PN16 1.6Mpa)

NPS WEIGHT PER KG D D1 NO OF HOLES h D4 b D3 D2 h1
15 95 65 45 12 10 14 2 2 4 0.43
20 105 75 58 12 16 14 2 2 4 0.55
25 115 85 68 12 22 14 2 2 4 0.67
32 135 100 78 12 28 18 2 2 4 0.91
40 145 110 88 14 36 18 3 2 4 1.24
50 160 125 102 14 46 18 3 2 4 1.55
65 180 145 122 14 60 18 3 2 4 2.04
80 195 160 138 14 76 18 3 2 4 2.44
100 215 180 158 16 94 18 3 2 8 3.51
125 245 210 188 16 118 18 3 2 8 4.69
150 280 240 212 18 142 23 3 2 8 6.99
200 335 295 268 20 196 23 3 2 12 11.49
250 390 355 320 24 244 27 3 2 12 19.74
300 405 410 378 28 294 27 4 3 12 29.58
350 460 470 438 32 344 27 4 3 16 44.22
400 520 525 490 34 390 30 4 3 16 59.86
500 580 650 610 40 490 33 4 3 20 102.69
600 710 770 720 45 590 40 5 4 20 161.98
800 840 950 900 52 780 40 5 4 24 300.6
1000 1020 1170 1110 63 980 46 5 4 28 542.16
1200 1485 1390 1325 75 1180 52 5 4 32 922.18

Dimensions & Weight of GOST/ГОСТ 12836 Blind Flange (PN25 2.5Mpa)

NPS WEIGHT PER KG D D1 NO OF HOLES h D4 b D3 D2 h1
15 95 65 45 12 10 14 2 2 4 0.43
20 105 75 58 12 16 14 2 2 4 0.55
25 115 85 68 12 22 14 2 2 4 0.67
32 135 100 78 12 28 18 2 2 4 0.91
40 145 110 88 14 36 18 3 2 4 1.24
50 160 125 102 14 46 18 3 2 4 1.55
65 180 145 122 16 60 18 3 2 8 2.29
80 195 160 138 18 76 18 3 2 8 3.21
100 230 190 162 20 94 23 3 2 8 5.07
125 270 220 188 22 118 27 3 2 8 7.83
150 300 250 218 24 142 27 3 2 8 10.95
200 360 310 278 26 196 27 3 2 12 17.51
250 425 370 335 30 244 30 3 2 12 28.93
300 485 430 390 34 294 30 4 3 16 42
350 550 490 450 38 344 33 4 3 16 61.48
400 610 550 505 40 390 33 4 3 16 81.12
500 730 660 615 48 490 40 4 3 20 140.22
600 840 770 720 50 590 40 5 4 20 194.5
800 1075 990 930 63 780 46 5 4 24 409.07

Dimensions & Weight of GOST/ГОСТ 12836 Blind Flange (PN40 4.0Mpa)

NPS WEIGHT PER KG D D1 NO OF HOLES h D4 b D3 D2 h1
15 95 65 45 16 10 14 2 2 4 0.63
20 105 75 58 16 16 14 2 2 4 0.8
25 115 85 68 16 22 14 2 2 4 0.98
32 135 100 78 16 28 18 2 2 4 1.33
40 145 110 88 16 36 18 3 2 4 1.49
50 160 125 102 18 46 18 3 2 4 2.15
65 180 145 122 20 60 18 3 2 8 3.03
80 195 160 138 22 76 18 3 2 8 4.08
100 230 190 162 24 94 23 3 2 8 6.27
125 270 220 188 28 118 27 3 2 8 10.31
150 300 250 218 30 142 27 3 2 8 14.07
200 375 320 280 38 196 30 3 2 12 28.3
250 445 385 345 45 244 33 3 2 12 48.5
300 510 450 410 48 294 33 4 3 16 66.99
350 570 510 465 50 344 33 4 3 16 88.9
400 655 585 535 56 390 40 4 3 16 131.59
500 755 670 615 70 490 46 4 3 20 218.7