Tech Info
Flanges :-
Dimenisons of Class 2500 Flanges
| 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 |
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| Welding neck |
Slip-on & socket welding |
Lap Joint |
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| O | Q | Y | Diam. | No. | dia. | R | |||
| 1/2 | 133.4 | 30.2 | 73.0 | 39.7 | 39.7 | 88.9 | 4 | 22 | 34.9 |
| 3/4 | 139.7 | 31.8 | 79.4 | 42.9 | 42.9 | 95.3 | 4 | 22 | 42.9 |
| 1 | 158.8 | 34.9 | 88.9 | 47.6 | 47.6 | 108.0 | 4 | 25 | 50.8 |
| 1-1/4 | 184.2 | 38.1 | 95.3 | 52.4 | 52.4 | 130.2 | 4 | 29 | 63.5 |
| 1-1/2 | 203.2 | 44.5 | 111.1 | 60.3 | 60.3 | 146.0 | 4 | 32 | 73.0 |
| 2 | 235.0 | 50.8 | 127.0 | 69.9 | 69.9 | 171.5 | 8 | 29 | 92.1 |
| 2-1/2 | 266.7 | 57.2 | 142.9 | 79.4 | 79.4 | 196.9 | 8 | 32 | 104.8 |
| 3 | 304.8 | 66.7 | 168.3 | 92.1 | 92.1 | 228.6 | 8 | 35 | 127.0 |
| 4 | 355.6 | 76.2 | 190.5 | 108.0 | 108.0 | 273.0 | 8 | 41 | 157.2 |
| 5 | 419.1 | 92.1 | 228.6 | 130.2 | 130.2 | 323.9 | 8 | 48 | 185.7 |
| 6 | 482.6 | 108.0 | 273.1 | 152.4 | 152.4 | 268.3 | 8 | 54 | 215.9 |
| 8 | 552.5 | 127.0 | 317.5 | 177.8 | 177.8 | 438.2 | 12 | 54 | 269.9 |
| 10 | 673.1 | 165.1 | 419.1 | 228.6 | 228.6 | 539.8 | 12 | 67 | 323.9 |
| 12 | 762.0 | 184.2 | 463.6 | 254.0 | 254.0 | 619.1 | 12 | 73 | 381.03 |