DCLASS 175 Flanges Dimensions
| Drilling | | | | Weight | | |
| Nom Size | Bolt Circle | Bolt Lengtha | Hole Diab | # of Holes | Weld Neck | Slip On | Blind |
| 26 | 29.88 | 5.5 | 0.88 | 28 | 120 | 105 | 405 |
| 28 | 31.88 | 5.75 | 0.88 | 28 | 130 | 115 | 490 |
| 30 | 34.13 | 5.75 | 0.88 | 36 | 150 | 130 | 590 |
| 32 | 36.13 | 6 | 0.88 | 36 | 160 | 140 | 700 |
| 34 | 38.38 | 6.75 | 1 | 36 | 195 | 200 | 840 |
| 36 | 40.38 | 6.75 | 1 | 36 | 205 | 210 | 970 |
| 38 | 42.38 | 7.25 | 1 | 36 | 245 | 250 | 1125 |
| 40 | 44.38 | 7.25 | 1 | 40 | 255 | 270 | 1300 |
| 42 | 46.88 | 8 | 1.13 | 40 | 340 | 365 | 1500 |
| 44 | 48.88 | 8.25 | 1.13 | 40 | 360 | 380 | 1700 |
| 46 | 50.88 | 8.25 | 1.13 | 40 | 375 | 410 | 1925 |
| 48 | 52.88 | 8.75 | 1.13 | 44 | 430 | 460 | 2225 |
| 50 | 54.88 | 8.75 | 1.13 | 44 | 450 | 480 | 2400 |
| 52 | 57.25 | 9.75 | 1.25 | 44 | 560 | 600 | 2800 |
| 54 | 59.25 | 9.75 | 1.25 | 44 | 580 | 620 | 3000 |
| 60 | 65.25 | 10.25 | 1.25 | 48 | 680 | 730 | 4000 |
| 66 | 71.25 | 11.5 | 1.25 | 56 | 830 | 1000 | 5175 |
| 72 | 77.75 | 12.75 | 1.25 | 64 | 1075 | 1400 | 6650 |
| 84 | 91.5 | 13.75 | 1.38 | 72 | 1550 | 2250 | – |
| 96 | 103.5 | 14.25 | 1.38 | 88 | 1950 | 2600 | – |
