FORGED FLANGES 150# DIMENSION AS PER ANSI B 16.5
| Dimensions for Class 150 Flanges | ||||||||||||||||
| Pipe Size (inches) | O | Q | R | X | No. of Holes | Dia. of Bolt Holes | Bolt Circle Dia | YY | H | J | Y | B | R | YY | BB | Z |
| 1/2 | 88.9 | 11.2 | 35.1 | 30.2 | 4 | 15.7 | 60.5 | 47.8 | 21.3 | 15.7 | 15.7 | 22.4 | 3.0 | 15.7 | 22.9 | 9.7 |
| 3/4 | 98.6 | 12.7 | 42.9 | 38.1 | 4 | 15.7 | 69.9 | 52.3 | 26.7 | 20.8 | 15.7 | 27.7 | 3.0 | 15.7 | 28.2 | 11.2 |
| 1 | 108.0 | 14.2 | 50.8 | 49.3 | 4 | 15.7 | 79.2 | 55.6 | 33.5 | 26.7 | 17.5 | 34.5 | 3.0 | 17.5 | 35.1 | 12.7 |
| 1 1/4 | 117.3 | 15.7 | 63.5 | 58.7 | 4 | 15.7 | 88.9 | 57.2 | 42.2 | 35.1 | 20.6 | 43.2 | 4.8 | 20.6 | 43.7 | 14.2 |
| 1 1/2 | 127.0 | 17.3 | 73.2 | 65.0 | 4 | 15.7 | 98.6 | 62.0 | 48.3 | 40.9 | 22.4 | 49.5 | 6.4 | 22.4 | 50.0 | 15.7 |
| 2 | 152.4 | 19.1 | 91.9 | 77.7 | 4 | 19.1 | 120.7 | 63.5 | 60.5 | 52.6 | 25.4 | 62.0 | 7.9 | 25.4 | 62.5 | 17.5 |
| 21/2 | 177.8 | 22.4 | 104.6 | 90.4 | 4 | 19.1 | 139.7 | 69.9 | 73.2 | 62.7 | 28.4 | 74.7 | 7.9 | 28.4 | 75.4 | 19.1 |
| 3 | 190.5 | 23.9 | 127.0 | 108.0 | 4 | 19.1 | 152.4 | 69.9 | 88.9 | 78.0 | 30.2 | 90.7 | 9.7 | 30.2 | 91.4 | 20.6 |
| 31/2 | 215.9 | 23.9 | 139.7 | 122.2 | 8 | 19.1 | 177.8 | 71.4 | 101.6 | 90.2 | 31.8 | 1033.8 | 9.7 | 31.8 | 104.1 | |
| 4 | 228.6 | 23.9 | 157.2 | 134.9 | 8 | 19.1 | 190.5 | 76.2 | 114.3 | 102.4 | 33.3 | 116.1 | 11.2 | 33.3 | 116.8 | |
| 5 | 254.0 | 23.9 | 185.7 | 163.6 | 8 | 22.4 | 215.9 | 88.9 | 141.2 | 128.3 | 36.6 | 143.8 | 11.2 | 36.6 | 144.5 | |
| 6 | 279.4 | 25.4 | 215.9 | 192.0 | 8 | 22.4 | 241.3 | 88.9 | 168.4 | 154.2 | 39.6 | 170.7 | 12.7 | 39.6 | 171.5 | |
| 8 | 342.9 | 28.4 | 269.7 | 246.1 | 8 | 22.4 | 298.5 | 101.6 | 219.2 | 202.7 | 44.5 | 221.5 | 12.7 | 44.5 | 222.3 | |
| 10 | 406.4 | 30.2 | 323.9 | 304.8 | 12 | 25.4 | 362.0 | 101.6 | 273.1 | 254.5 | 49.3 | 276.4 | 12.7 | 49.3 | 277.4 | |
| 12 | 482.6 | 31.8 | 381.0 | 365.3 | 12 | 25.4 | 431.8 | 114.3 | 323.9 | 304.8 | 55.6 | 327.2 | 12.7 | 55.6 | 328.2 | |
| 14 | 533.4 | 35.1 | 412.8 | 400.1 | 12 | 28.4 | 476.3 | 127.0 | 355.6 | To Be Specified by the Purchaser | 57.2 | 359.2 | 12.7 | 79.2 | 360.2 | |
| 16 | 596.9 | 36.6 | 469.9 | 457.2 | 16 | 28.4 | 539.8 | 127.0 | 406.4 | 63.5 | 410.5 | 12.7 | 87.4 | 411.2 | ||
| 18 | 635.0 | 39.6 | 533.4 | 505.0 | 16 | 31.8 | 577.9 | 139.7 | 457.2 | 68.3 | 461.8 | 12.7 | 96.8 | 462.3 | ||
| 20 | 698.5 | 42.9 | 584.2 | 558.8 | 20 | 31.8 | 635.0 | 144.5 | 508.0 | 73.2 | 513.1 | 12.7 | 103.1 | 514.4 | ||
| 24 | 812.8 | 47.8 | 692.2 | 663.4 | 20 | 35.1 | 749.3 | 152.4 | 609.6 | 82.6 | 616.0 | 12.7 | 111.3 | 616.0 | ||