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ASME B16.5 Flanges
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ASME B16.47 Large Diameter Flanges
Dimensional Tolerances
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ASME B16.47 - Dimensions

WELDING ENDS
Nominal Pipe Size Wall Tickness Inside Diameter Identification
in. mm in. mm Std.(1) XS; XXS Schedule Nr.
1/2" 0.11 2.8 0.62 15.8 Std. 40
0.15 3.7 0.55 13.9 XS 80
0.19 4.8 0.46 11.8 160
0.29 7.5 0.25 6.4 XXS
03/04/07 0.11 2.9 0.82 20.9 Std. 40
0.15 3.9 0.74 18.8 XS 80
0.22 5.6 0.61 15.5 160
0.31 7.8 0.43 11 XXS
1" 0.13 3.4 1.05 26.6 Std. 40
0.18 4.5 0.96 24.3 XS 80
0.25 6.4 0.82 20.7 160
0.36 9.1 0.6 15.2 XXS
1 1/4" 0.14 3.6 1.38 35.1 Std. 40
0.19 4.9 1.28 32.5 XS 80
0.25 6.4 1.16 29.5 160
0.38 9.7 0.9 22.8 XXS
1 1/2" 0.15 3.7 1.61 40.9 Std. 40
0.2 5.1 1.5 38.1 XS 80
0.28 7.1 1.34 34 160
0.4 10.2 1.1 27.9 XXS
2" 0.15 3.9 2.07 52.5 Std. 40
0.22 5.5 1.94 49.3 XS 80
0.34 8.7 1.69 42.8 160
0.44 11.1 1.5 38.2 XXS
2 1/2" 0.2 5.2 2.47 62.7 Std. 40
0.28 7 2.32 59 XS 80
0.38 9.5 2.13 54 160
0.55 14 1.77 45 XXS
3" 0.22 5.5 3.07 77.9 Std. 40
0.3 7.6 2.9 73.7 XS 80
0.44 11.1 2.62 66.6 160
0.6 15.2 2.3 58.4 XXS
3 1/2" 0.23 5.7 3.55 90.1 Std. 40
0.32 8.1 3.36 85.4 XS 80
4" 0.24 6 4.03 102.3 Std. 40
0.34 8.6 3.83 97.2 XS 80
0.44 11.1 3.62 92 120
0.53 13.5 3.44 87.3 160
0.67 17.1 3.15 80.1 XXS
5" 0.26 6.6 5.05 128.2 Std. 40
0.38 9.5 4.81 122.3 XS 80
0.5 12.7 4.56 115.9 120
0.63 15.9 4.31 109.6 160
0.75 19.1 4.06 103.2 XXS
6" 0.28 7.1 6.07 154.1 Std. 40
0.43 11 5.76 146.3 XS 80
0.56 14.3 5.5 139.7 120
0.72 18.3 5.19 131.8 160
0.86 21.9 4.9 124.4 XXS
8" 0.25 6.4 8.13 206.4 20
0.28 7 8.07 205 30
0.32 8.2 7.98 202.7 Std. 40
0.41 10.3 7.81 198.5 60
0.5 12.7 7.63 193.7 XS 80
0.59 15.1 7.44 189 100
0.72 18.3 7.19 182.6 120
0.81 20.6 7 177.8 140
0.88 22.2 6.88 174.6 XXS
0.91 23 6.81 173.1 160
10" 0.25 6.4 10.25 260.4 20
0.31 7.8 10.14 257.5 30
0.37 9.3 10.02 254.5 Std. 40
0.5 12.7 9.75 247.7 XS 60
0.59 15.1 9.56 242.9 80
0.72 18.3 9.31 236.6 100
0.84 21.4 9.06 230.2 120
1 25.4 8.75 222.3 XXH 140
1.13 28.6 8.5 215.9 160
12" 0.25 6.4 12.25 311.2 20
0.33 8.4 12.09 307.1 30
0.38 9.5 12 304.8 Std.
0.41 10.3 11.94 303.2 40
0.5 12.7 11.75 298.5 XS
0.56 14.3 11.63 295.3 60
0.69 17.5 11.38 289 80
0.84 21.4 11.06 281 100
1 25.4 10.75 273.1 XXH 120
1.13 28.6 10.5 266.7 140
1.31 33.3 10.13 257.2 160
14" 0.25 6.4 13.5 342.9 10
0.31 7.9 13.38 339.8 20
0.38 9.5 13.25 336.6 Std. 30
0.44 11.1 13.12 333.3 40
0.5 12.7 13 330.2 XS
0.59 15.1 12.81 325.5 60
0.75 19.1 12.5 317.5 80
0.94 23.8 12.13 308 100
1.09 27.8 11.81 300.1 120
1.25 31.8 11.5 292.1 140
1.41 35.7 11.19 284.2 160
16" 0.25 6.4 15.5 393.7 10
0.31 7.9 15.38 390.6 20
0.38 9.5 15.25 387.4 Std. 30
0.5 12.7 15 381 XS 40
0.66 16.7 14.69 373.1 60
0.84 21.4 14.31 363.6 80
1.03 26.2 13.94 354 100
1.22 31 13.56 344.5 120
1.44 36.5 13.12 333.3 140
1.59 40.5 12.81 325.5 160
18" 0.25 6.4 17.5 444.5 10
0.31 7.9 17.38 441.4 20
0.38 9.5 17.25 438.2 Std.
0.44 11.1 17.12 434.9 30
0.5 12.7 17 431.8 XS
0.56 14.3 16.88 428.7 40
0.75 19.1 16.5 419.1 60
0.94 23.8 16.13 409.6 80
1.16 29.4 15.69 398.5 100
1.38 34.9 15.25 387.4 120
1.56 39.7 14.88 377.9 140
1.78 45.2 14.44 366.7 160
20" 0.25 6.4 19.5 495.3 10
0.38 9.5 19.25 489 Std. 20
0.5 12.7 19 482.6 XS 30
0.59 15.1 18.81 477.9 40
0.81 20.6 18.38 466.8 60
1.03 26.2 17.94 455.6 80
1.28 32.5 17.44 442.9 100
1.5 38.1 17 431.8 120
1.75 44.5 16.5 419.1 140
1.97 50 16.06 408 160
24" 0.25 6.4 23.5 596.9 10
0.38 9.5 23.25 590.6 Std. 20
0.5 12.7 23 584.2 XS
0.56 14.3 22.88 581.1 30
0.69 17.5 22.63 574.7 40
0.97 24.6 22.06 560.4 60
1.22 31 21.56 547.7 80
1.53 38.9 20.94 531.8 100
1.81 46 20.38 517.6 120
2.06 52.4 19.88 504.9 140
2.34 59.5 19.31 490.6 160
26" 0.31 7.9 25.38 644.6 10
0.38 9.5 25.25 641.4 Std.
0.5 12.7 25 635 XS 20
28" 0.31 7.9 27.38 695.4 10
0.38 9.5 27.25 692.2 Std.
0.5 12.7 27 685.8 XS 20
0.63 15.9 26.75 679.5 30
30" 0.31 7.9 29.38 746.2 10
0.38 9.5 29.25 743 Std.
0.5 12.7 29 736.6 XS 20
0.63 15.9 28.75 730.3 30
32" 0.31 7.9 31.38 797 10
0.38 9.5 31.25 793.8 Std.
0.5 12.7 31 787.4 XS 20
0.63 15.9 30.75 781.1 30
0.69 17.5 30.62 777.8 40
34" 0.31 7.9 33.38 847.8 10
0.38 9.5 33.25 844.6 Std.
0.5 12.7 33 838.2 XS 20
0.63 15.9 32.75 831.9 30
0.69 17.5 32.62 828.6 40
36" 0.31 7.9 35.38 898.6 10
0.38 9.5 35.25 895.4 Std.
0.5 12.7 35 889 XS 20
0.63 15.9 34.75 882.7 30
0.75 19.1 34.5 876.3 40
38" 0.38 9.5 37.25 946.2 Std.
0.5 12.7 37 939.8 XS
40" 0.38 9.5 39.25 997 Std.
0.5 12.7 39 990.6 XS
42" 0.38 9.5 41.25 1047.8 Std.
0.5 12.7 41 1041.4 XS
44" 0.38 9.5 43.25 1098.6 Std.
0.5 12.7 43 1092.2 XS
46" 0.38 9.5 45.25 1149.4 Std.
0.5 12.7 45 1143 XS
48" 0.38 9.5 47.25 1200.2 Std.
0.5 12.7 47 1193.8 XS

Disclaimer: These dimensions are provided for reference material only.

 

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