All dimensions are in "mm" unless noted otherwise.
Dimensions of Class 150 RF Weld Neck Flanges Series A as per ASME B16.47.
| Nominal Pipe Size |
OD of Flange (O) |
Thickness of Flange (C) |
Length thru Hub (V) |
Dia of Hub at base (X) |
Dia of Hub at end (A) |
Dia of Raised Face (R) |
Dia of Bolt Circle |
No of Bolt Holes |
Dia of Bolt Holes |
Dia of Bolt |
Fillet Radius (r1) |
Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 870 | 68.3 | 120.7 | 676.1 | 660.4 | 749.3 | 806.5 | 24 | 35.1 | 31.8 | 9.7 | 150 |
| 28 | 927.1 | 71.4 | 125.5 | 726.9 | 711.2 | 800.1 | 863.6 | 28 | 35.1 | 31.8 | 11.2 | 171 |
| 30 | 984.30 | 74.70 | 136.7 | 781.1 | 762 | 857.3 | 914.4 | 28 | 35.1 | 31.8 | 11.2 | 200 |
| 32 | 1060.5 | 81 | 144.5 | 831.9 | 812.8 | 914.4 | 977.9 | 28 | 41.1 | 38.1 | 11.2 | 250 |
| 34 | 1111.3 | 82.6 | 149.4 | 882.7 | 863.6 | 965.2 | 1028.7 | 32 | 41.1 | 38.1 | 12.7 | 267 |
| 36 | 1168.4 | 90.4 | 157.2 | 933.5 | 914.4 | 1022.4 | 1085.9 | 32 | 41.1 | 38.1 | 12.7 | 316 |
| 38 | 1238.3 | 87.4 | 157.2 | 990.6 | 965.2 | 1073.2 | 1149.4 | 32 | 41.1 | 38.1 | 12.7 | 352 |
| 40 | 1289 | 90.4 | 163.6 | 1041.4 | 1016 | 1124 | 1200.2 | 36 | 41.1 | 38.1 | 12.7 | 379 |
| 42 | 1346.2 | 96.8 | 171.5 | 1092.2 | 1066.8 | 1193.8 | 1257.3 | 36 | 41.1 | 38.1 | 12.7 | 435 |
| 44 | 1403.4 | 101.6 | 177.8 | 114.3 | 1117.6 | 1244.6 | 1314.5 | 40 | 41.1 | 38.1 | 12.7 | 484 |
| 46 | 1454.2 | 103.1 | 185.7 | 1196.8 | 1168.4 | 1295.4 | 1365.3 | 40 | 41.1 | 38.1 | 12.7 | 518 |
| 48 | 1511.3 | 108 | 192 | 1247.6 | 1219.2 | 1358.9 | 1422.4 | 44 | 41.1 | 38.1 | 12.7 | 572 |
| 50 | 1568.5 | 111.3 | 203.2 | 1301.8 | 1270 | 1409.7 | 1479.6 | 44 | 47.8 | 44.5 | 12.7 | 616 |
| 52 | 1625.6 | 115.8 | 209.6 | 1352.6 | 1320.8 | 1460.5 | 1530.4 | 44 | 47.8 | 44.5 | 12.7 | 681 |
| 54 | 1682.8 | 120.7 | 215.9 | 1403.4 | 1371.6 | 1511.3 | 1593.9 | 44 | 47.8 | 44.5 | 12.7 | 751 |
| 56 | 1746.3 | 124 | 228.6 | 1457.5 | 1422.4 | 1574.8 | 1651 | 48 | 47.8 | 44.5 | 12.7 | 835 |
| 58 | 1803.4 | 128.5 | 235 | 1508.3 | 1473.2 | 1625.6 | 1708.2 | 48 | 47.8 | 44.5 | 12.7 | 914 |
| 60 | 1854.2 | 131.8 | 239.8 | 1559.1 | 1524 | 1676.4 | 1759 | 52 | 47.8 | 44.5 | 12.7 | 961 |
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