| DN |
Outside Diameter of Flange (D) |
Thickness of flange minimum (b) |
Bolt Size (M) |
Number of Drilling Holes (No.) |
Bolt Hole diameter (d1) |
Pitch Circle of Bolt Holes (d) |
|---|---|---|---|---|---|---|
| 10 | 90 | 12 | M12 | 4 | 14 | 60 |
| 15 | 95 | 14 | M12 | 4 | 14 | 65 |
| 20 | 105 | 14 | M12 | 4 | 14 | 75 |
| 25 | 115 | 16 | M12 | 4 | 14 | 85 |
| 32 | 140 | 18 | M16 | 4 | 18 | 100 |
| 40 | 150 | 20 | M16 | 4 | 18 | 110 |
| 50 | 165 | 20 | M16 | 4 | 18 | 125 |
| 65 | 185 | 22 | M16 | 8 | 18 | 145 |
| 80 | 200 | 22 | M16 | 8 | 18 | 160 |
| 100 | 235 | 25 | M20 | 8 | 22 | 190 |
| 1251) | 270 | 28 | M24 | 8 | 26 | 220 |
| 150 | 300 | 30 | M24 | 8 | 26 | 250 |
| 1751) | 350 | 32 | M24 | 12 | 26 | 295 |
| 200 | 375 | 32 | M24 | 12 | 26 | 320 |
| 2251) | 420 | 35 | M30 | 12 | 33 | 355 |
| 250 | 450 | 38 | M30 | 12 | 33 | 385 |
| 300 | 515 | 40 | M30 | 16 | 33 | 450 |
| 350 | 580 | 45 | M30 | 16 | 33 | 510 |
| 400 | 660 | 50 | M36 | 16 | 39 | 585 |
| 450 | 685 | 60 | M36 | 20 | 39 | 610 |
| 500 | 755 | 70 | M36 | 20 | 39 | 670 |
| 1) Non-preferred size. | ||||||
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