| DN |
Outside Diameter (D) |
Diameter of Bolt Circle (K) |
Diameter of Bolt Hole (L) |
Bolting Number |
Bolting Size |
Bore Diameters (B2) |
Flange Thickness (C1) |
Chamfer (E) |
|---|---|---|---|---|---|---|---|---|
| 10 | 90 | 60 | 14 | 4 | M12 | 21 | 14 | 3 |
| 15 | 95 | 65 | 14 | 4 | M12 | 25 | 14 | 3 |
| 20 | 105 | 75 | 14 | 4 | M12 | 31 | 16 | 4 |
| 25 | 115 | 85 | 14 | 4 | M12 | 38 | 16 | 4 |
| 32 | 140 | 100 | 18 | 4 | M16 | 47 | 18 | 5 |
| 40 | 150 | 110 | 18 | 4 | M16 | 53 | 18 | 5 |
| 50 | 165 | 125 | 18 | 4 | M16 | 65 | 20 | 5 |
| 65 | 185 | 145 | 18 | 8 | M16 | 81 | 22 | 6 |
| 80 | 200 | 160 | 18 | 8 | M16 | 94 | 24 | 6 |
| 100 | 235 | 190 | 22 | 8 | M20 | 120 | 26 | 6 |
| 125 | 270 | 220 | 26 | 8 | M24 | 145 | 28 | 6 |
| 150 | 300 | 250 | 26 | 8 | M24 | 174 | 30 | 6 |
| 200 | 375 | 320 | 30 | 12 | M27 | 226 | 36 | 6 |
| 250 | 450 | 385 | 33 | 12 | M30 | 281 | 42 | 8 |
| 300 | 515 | 450 | 33 | 16 | M30 | 333 | 52 | 8 |
| 350 | 580 | 510 | 36 | 16 | M33 | 365 | 58 | 8 |
| 400 | 660 | 585 | 39 | 16 | M36 | 416 | 65 | 8 |
| 450 | 685 | 610 | 39 | 20 | M36 | 467 | d | 8 |
| 500 | 755 | 670 | 42 | 20 | M39 | 519 | d | 8 |
| 600 | 890 | 795 | 48 | 20 | M45 | 622 | d | 8 |
| 700b | - | - | - | - | - | - | - | - |
| 800b | - | - | - | - | - | - | - | - |
| 900b | - | - | - | - | - | - | - | - |
| 1000b | - | - | - | - | - | - | - | - |
| 1200b | - | - | - | - | - | - | - | - |
| 1400b | - | - | - | - | - | - | - | - |
| 1600b | - | - | - | - | - | - | - | - |
a) For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter and the nominal value dimensions A, N3 and R1 and their tolerances are included for guidance only.
c) Use is limited up to DN 600.
d) To be specified by the purchaser.
b) Only mating dimensions fixed, see Annex J.
Precision Engineering. Technical Expertise. Global Supply.
