Standards, Dimensions & Weight of SW Flanges |
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ASME/ANSI B16.5 Class 150 SW
| Nominal Pipe Size | Outside Diameter of Flange | Diameter of Raised Face | Thickness of Flanges Min. | Diameter of Hub | Length Through Hub | Bore | Depth of Socket | Diameter of Bolt Circle | Diameter of Bolt Holes | Number of Bolts | Approxi-mate Weight kgs | |
| NPS | O | R | tf | X | Y | B1 | B2 | D | W | I | n | |
| 1/2 | 90 | 34.9 | 9.6 | 30 | 14 | 22.2 | 15.8 | 10 | 60.3 | 15.9 | 4 | 0.42 |
| 3/4 | 100 | 42.9 | 11.2 | 38 | 14 | 27.7 | 20.9 | 11 | 69.9 | 15.9 | 4 | 0.60 |
| 1 | 110 | 50.8 | 12.7 | 49 | 16 | 34.5 | 26.6 | 13 | 79.4 | 15.9 | 4 | 0.83 |
| 1 1/4 | 115 | 63.5 | 14.3 | 59 | 19 | 43.2 | 35.1 | 14 | 88.9 | 15.9 | 4 | 1.01 |
| 1 1/2 | 125 | 73.0 | 15.9 | 65 | 21 | 49.5 | 40.9 | 16 | 98.4 | 15.9 | 4 | 1.32 |
| 2 | 150 | 92.1 | 17.5 | 78 | 24 | 61.9 | 52.5 | 17 | 120.7 | 19.1 | 4 | 2.07 |
| 2 1/2 | 180 | 104.8 | 20.7 | 90 | 27 | 74.6 | 62.7 | 19 | 139.7 | 19.1 | 4 | 3.51 |
| 3 | 190 | 127.0 | 22.3 | 108 | 29 | 90.7 | 77.9 | 21 | 152.4 | 19.1 | 4 | 4.01 |
