| Nominal Diameter of Flange | Outside Diameter of Steel Pipe | Inside Diameter of Flange do | Outside Diameter of Flange D | Sectional Dimensions of Flange | Bolt Hole | Reference | Approx Weight (kg) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| t | T | Diameter of Hub | Rad r | f | g | d | Bolt Circle Diameter C | Number of Bolt Holes | Hole Diameter h | Nominal Bolt Size | S1 | m | S2 | n | SOP | SOH | BL | |||||
| a | b | |||||||||||||||||||||
| 10 | 17.3 | 17.8 | 110 | 18 | 26 | 34 | 38 | 5 | 1 | 52 | - | 75 | 4 | 19 | M16 | 28.0 | 6 | 28 | 5 | 1.0 | 1.11 | 1.2 |
| 15 | 21.7 | 22.2 | 115 | 20 | 30 | 39 | 43 | 5 | 1 | 55 | - | 80 | 4 | 19 | M16 | 32.5 | 6 | 32.5 | 5 | 1.3 | 1.39 | 1.4 |
| 20 | 27.2 | 27.7 | 120 | 20 | 30 | 45 | 49 | 5 | 1 | 60 | - | 85 | 4 | 19 | M16 | 38.0 | 6 | 38.0 | 5 | 1.5 | 1.51 | 1.6 |
| 25 | 34.0 | 34.5 | 130 | 22 | 32 | 55 | 59 | 5 | 1 | 70 | - | 95 | 4 | 19 | M16 | 47.8 | 8 | 47.8 | 5 | 1.9 | 1.97 | 2.1 |
| 32 | 42.7 | 43.2 | 140 | 24 | 35 | 64 | 68 | 6 | 1 | 80 | - | 105 | 4 | 19 | M16 | 56.5 | 8 | 56.5 | 5 | 2.4 | 2.50 | 2.7 |
| 40 | 48.6 | 49.1 | 160 | 24 | 35 | 70 | 74 | 6 | 2 | 90 | - | 120 | 4 | 23 | M20 | 62.5 | 8 | 62.5 | 5 | 3.1 | 3.26 | 3.5 |
| 50 | 60.5 | 61.1 | 165 | 26 | 38 | 86 | 90 | 6 | 2 | 105 | - | 130 | 8 | 19 | M20 | 74.5 | 7 | 74.5 | 5 | 3.3 | 3.47 | 3.9 |
| 65 | 76.3 | 77.1 | 200 | 30 | 44 | 106 | 110 | 8 | 2 | 130 | 62.3 | 160 | 8 | 23 | M20 | 91.5 | 7 | 91.5 | 7 | 5.5 | 5.97 | 6.6 |
| 80 | 89.1 | 90.3 | 210 | 32 | 46 | 118 | 124 | 8 | 2 | 140 | 73.9 | 170 | 8 | 23 | M20 | 105.5 | 7 | 105.5 | 7 | 6.4 | 6.76 | 8.0 |
| 100 | 114.3 | 115.4 | 250 | 36 | 52 | 145 | 151 | 8 | 2 | 165 | 97.1 | 205 | 8 | 25 | M22 | 133.0 | 8.5 | 133.0 | 7 | 9.9 | 10.78 | 12.9 |
| 125 | 139.8 | 141.4 | 300 | 40 | 58 | 182 | 188 | 8 | 2 | 200 | 120.8 | 250 | 8 | 27 | M24 | 160.5 | 9.5 | 160.5 | 7 | 15.9 | 16.97 | 20.8 |
| 150 | 165.2 | 167.0 | 355 | 44 | 64 | 200 | 208 | 8 | 2 | 240 | 143.2 | 295 | 12 | 33 | M30 | 188.0 | 11 | 188.0 | 7 | 21.2 | 22.6 | 30.8 |
| 200 | 216.3 | 218.2 | 405 | 50 | 72 | 255 | 263 | 8 | 2 | 290 | 190.9 | 345 | 12 | 33 | M30 | 243.0 | 13 | 243.0 | 7 | 32.1 | 34.9 | 46.8 |
| 250 | 267.4 | 269.5 | 475 | 56 | 80 | 310 | 318 | 10 | 2 | 355 | 237.2 | 410 | 12 | 33 | M30 | 298.0 | 15 | 298.0 | 7 | 40.6 | 41.7 | 73.8 |