FLANGES FITTING DIMENSIONAL STANDARD ANSI B-16.5
| Normal pipe size |
Outside dia. of flange |
Minimum thickness of flange |
Overall Length | Bolt Circle |
No. and Size of Holes |
O.D. of raised face |
|||
| Slip-on & socket welding |
Welding neck |
Lap Joint | |||||||
| 1/2 | 89 | 11.2 | 15.9 | 47.6 | 15.9 | 60.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 25.4 | 57.2 | 25.4 | 82.5 | 4 | 15 | 43 |
| 1 | 108 | 14.3 | 17.5 | 55.6 | 17.5 | 79.5 | 4 | 15 | 51 |
| 1.1/4 | 117 | 15.9 | 20.6 | 57.2 | 20.6 | 89.0 | 4 | 15 | 64 |
| 1.1/2 | 127 | 17.5 | 22.2 | 61.9 | 22.2 | 98.5 | 4 | 15 | 73 |
| 2 | 152 | 19.1 | 25.4 | 63.5 | 25.4 | 120.5 | 4 | 19 | 92 |
| 2.1/2 | 178 | 22.3 | 28.6 | 69.8 | 28.6 | 139.5 | 4 | 19 | 105 |
| 3 | 190 | 23.9 | 30.2 | 69.8 | 30.2 | 152.5 | 4 | 19 | 127 |
| 3.1/2 | 216 | 23.9 | 31.8 | 71.4 | 31.8 | 178.0 | 8 | 19 | 140 |
| 4 | 229 | 23.9 | 33.3 | 86.2 | 33.3 | 190.5 | 8 | 19 | 157 |
| 5 | 254 | 23.9 | 36.5 | 88.9 | 36.5 | 216.0 | 8 | 22 | 186 |
| 6 | 279 | 25.4 | 39.7 | 88.9 | 39.7 | 241.5 | 8 | 22 | 216 |
| 8 | 343 | 28.6 | 44.4 | 101.6 | 44.4 | 298.5 | 8 | 22 | 270 |
| 10 | 406 | 30.2 | 49.2 | 101.6 | 49.2 | 362.0 | 12 | 25 | 324 |
| 12 | 483 | 31.8 | 55.6 | 114.3 | 55.6 | 432.0 | 12 | 25 | 381 |
| 14 | 533 | 35.0 | 57.2 | 127.0 | 79.4 | 476.0 | 12 | 29 | 413 |
| 16 | 597 | 36.6 | 63.5 | 127.0 | 87.3 | 539.5 | 16 | 29 | 470 |
| 18 | 635 | 39.7 | 68.3 | 139.7 | 96.8 | 578.0 | 16 | 32 | 533 |
| 20 | 698 | 42.9 | 73.0 | 144.5 | 103.2 | 635.0 | 20 | 32 | 584 |
| 24 | 813 | 47.7 | 82.6 | 152.4 | 111.1 | 749.5 | 20 | 35 | 692 |