American Flange Standards
| CL 900 Series.A | FLANGE THICKNESS | LTB | DRILLING DATA | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| NOMINAL PIPE SIZE | FLANGE OUTSIDE DIAMETER | THICKNESS OF W/N MIN | THICKNESS OF BLIND MIN | WELD NECK LENGTH | PITCH CIRCLE DIAMETER | BOLT HOLE DIAMETER | NUMBER OF BOLTS HOLES | NOMINAL PIPE SIZE | ||
| MM | INCH | OD | T | T1 | L1 | PCD | H | # | MM | INCH |
| 650 | 26 | 1085 | 139.7 | 160.4 | 286 | 952.5 | 73 | 20 | 650 | 26 |
| 700 | 28 | 1170 | 142.9 | 171.5 | 298 | 1022.4 | 79 | 20 | 700 | 28 |
| 750 | 30 | 1230 | 149.3 | 182.6 | 311 | 1085.8 | 79 | 20 | 750 | 30 |
| 800 | 32 | 1315 | 158.8 | 193.7 | 330 | 1155.7 | 86 | 20 | 800 | 32 |
| 850 | 34 | 1395 | 165.1 | 204.8 | 349 | 1225.6 | 92 | 20 | 850 | 34 |
| 900 | 36 | 1460 | 171.5 | 214.4 | 362 | 1289 | 92 | 20 | 900 | 36 |
| 950 | 38 | 1460 | 190.5 | 215.9 | 352 | 1289 | 92 | 20 | 950 | 38 |
| 1000 | 40 | 1510 | 196.9 | 223.9 | 364 | 1339.8 | 92 | 24 | 1000 | 40 |
| 1050 | 42 | 1560 | 206.4 | 231.8 | 371 | 1390.6 | 92 | 24 | 1050 | 42 |
| 1100 | 44 | 1650 | 214.4 | 242.9 | 391 | 1463.7 | 98 | 24 | 1100 | 44 |
| 1150 | 46 | 1735 | 225.5 | 255.6 | 411 | 1536.7 | 105 | 24 | 1150 | 46 |
| 1200 | 48 | 1785 | 233.4 | 263.6 | 419 | 1587.5 | 105 | 24 | 1200 | 48 |
