American Flange Standards
| CLASS 2500 | FLANGE THICKNESS | LTB | DRILLING DATA | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOMINAL PIPE SIZE | FLANGE OUTSIDE DIAMETER | THICKNESS OF FLANGE MIN | BOSSED LENGTH | WELD NECK LENGTH | LAP JOINT LENGTH | LONG WELD NECK LENGTH | PITCH CIRCLE DIAMETER | BOLT HOLE DIAMETER | NUMBER OF BOLT HOLES | NOMINAL PIPE SIZE | ||
| MM | INCH | OD | T & T1 | L | L1 | L2 | L3 | PCD | H | # | MM | INCH |
| 15 | 1/2 | 135 | 30.2 | 47.0 | 80 | 40 | 229 | 88.9 | 22 | 4 | 15 | 1/2 |
| 20 | 3/4 | 140 | 31.8 | 50.0 | 86 | 43 | 229 | 95.2 | 22 | 4 | 20 | 3/4 |
| 25 | 1 | 160 | 35 | 55.0 | 96 | 48 | 229 | 108 | 26 | 4 | 25 | 1 |
| 32 | 1 1/4 | 185 | 39.1 | 59.0 | 102 | 52 | 229 | 130.2 | 29 | 4 | 32 | 1 1/4 |
| 40 | 1 1/2 | 205 | 44.5 | 67.0 | 118 | 60 | 229 | 146 | 32 | 4 | 40 | 1 1/2 |
| 50 | 2 | 235 | 50.9 | 77.0 | 134 | 70 | 229 | 171.4 | 29 | 8 | 50 | 2 |
| 65 | 2 1/2 | 265 | 57.2 | 86.0 | 150 | 79 | 229 | 196.8 | 32 | 8 | 65 | 2 1/2 |
| 80 | 3 | 305 | 66.7 | 175 | 92 | 229 | 228.6 | 35 | 8 | 80 | 3 | |
| 100 | 4 | 385 | 76.2 | 197 | 108 | 305 | 273 | 42 | 8 | 100 | 4 | |
| 125 | 5 | 420 | 92.1 | 235 | 130 | 305 | 323.8 | 48 | 8 | 125 | 5 | |
| 150 | 6 | 485 | 108 | 280 | 152 | 305 | 368.3 | 54 | 8 | 150 | 6 | |
| 200 | 8 | 550 | 127 | 324 | 178 | 305 | 438.2 | 54 | 12 | 200 | 8 | |
| 250 | 10 | 675 | 165.1 | 426 | 229 | 406 | 539.8 | 67 | 12 | 250 | 10 | |
| 300 | 12 | 760 | 184.2 | 471 | 254 | 406 | 619.1 | 73 | 12 | 300 | 12 | |
NOTES:
(1) Schedule of weld neck to be advised.
(2) LTB and bore size or schedule to be specified at time of order
Balcombe Engineering Pty Ltd has been the leading Australian specialist flange manufacturer in the flange industry for over 50 years servicing a diverse range of customers for flanges, spectacle blinds, and tubeplates
