TABLE 23 PLATE FLANGES FOR WELDING
Nominal pressure 2.5 N/mm2. (All Dimensions in millimetres.)
| Nom size |
Pipe o.d. d1 |
FLANGE | RAISED FACE | Bolting | ..........Drilling.......... | ||||
| D | b | d4 | f | No. | d2 | k | |||
| 10 | 17.2 | 90 | 16 | 40 | 2 | M12 | 4 | 14 | 60 |
| 15 | 21.3 | 95 | 16 | 45 | 42 | M12 | 4 | 14 | 65 |
| 20 | 26.9 | 105 | 18 | 58 | 2 | M12 | 4 | 14 | 75 |
| 25 | 33.7 | 115 | 18 | 68 | 2 | M12 | 4 | 14 | 85 |
| 32 | 42.4 | 140 | 18 | 78 | 2 | M16 | 4 | 18 | 100 |
| 40 | 48.3 | 150 | 20 | 88 | 3 | M16 | 4 | 18 | 110 |
| 50 | 60.3 | 165 | 20 | 102 | 3 | M16 | 4 | 18 | 125 |
| 65 | 76.1 | 185 | 22 | 122 | 3 | M16 | 8 | 18 | 145 |
| 80 | 88.9 | 200 | 24 | 138 | 3 | M16 | 8 | 18 | 160 |
| 100 | 114.3 | 235 | 26 | 162 | 3 | M20 | 8 | 22 | 190 |
| 125 | 139.7 | 270 | 28 | 188 | 3 | M24 | 8 | 26 | 220 |
| 150 | 168.3 | 300 | 30 | 218 | 3 | M24 | 8 | 26 | 250 |
| 175 | 193.7 | 330 | 26 | 248 | 3 | M24 | 12 | 26 | 280 |
| 200 | 219.1 | 360 | 28 | 278 | 3 | M24 | 12 | 26 | 310 |
| 250 | 273 | 425 | 32 | 335 | 3 | M27 | 12 | 30 | 370 |
| 300 | 323.9 | 485 | 38 | 395 | 4 | M27 | 16 | 30 | 430 |
| 350 | 355.6 | 555 | 42 | 450 | 4 | M30 | 16 | 33 | 490 |
| 400 | 406.4 | 620 | 46 | 505 | 4 | M33 | 16 | 36 | 550 |
| 450 | 462 | 675 | 52 | - | - | - | - | - | - |
| 500 | 508 | 730 | 58 | 615 | 4 | M33 | 20 | 36 | 660 |
| 600 | 609.6 | 845 | 66 | 720 | 5 | M36 | 20 | 39 | 770 |