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DIN FLANGE DIN 2631 Welding Neck Flange
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(Dimensions in mm)
| Nominal Pressure 6 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe | Flange | Neck | Raised Face | Drilling | Approx. Weight (7.85 kg/dm3) kg |
|||||||||||
| Nominal Size |
d1 | D | b | k | h1 | d3 | s | r | h2 | d4 | f | Number of Holes |
Bolt Diameter |
d2 | ||
| 10 | 14 17.2*) |
75 | 12 | 50 | 28 | 22 26 |
1.8 | 4 | 6 | 35 | 2 | 4 | M10 | - | 11.5 | 0.335 |
| 15 | 20 21.3*) |
80 | 12 | 55 | 30 | 28 30 |
2 | 4 | 6 | 40 | 2 | 4 | M10 | - | 11.5 | 0.392 |
| 20 | 25 26.9*) |
90 | 14 | 65 | 32 | 35 38 |
2.3 | 4 | 6 | 50 | 2 | 4 | M10 | - | 11.5 | 0.592 |
| 25 | 30 33.7*) |
100 | 14 | 75 | 35 | 40 42 |
2.6 | 4 | 6 | 60 | 2 | 4 | M10 | - | 11.5 | 0.747 |
| 32 | 38 42.4*) |
120 | 14 | 90 | 35 | 50 55 |
2.6 | 6 | 6 | 70 | 2 | 4 | M12 | (1/2") | 14 | 1.05 |
| 40 | 44.5 48.3*) |
130 | 14 | 100 | 38 | 58 62 |
2.6 | 6 | 7 | 80 | 3 | 4 | M12 | (1/2") | 14 | 1.18 |
| 50 | 57 60.3*) |
140 | 14 | 110 | 38 | 70 74 |
2.9 | 6 | 8 | 90 | 3 | 4 | M12 | (1/2") | 14 | 1.34 |
| 65 | 76.1*) | 160 | 14 | 130 | 38 | 88 | 2.9 | 6 | 9 | 110 | 3 | 4 | M12 | (1/2") | 14 | 1.67 |
| 80 | 88.9*) | 190 | 16 | 150 | 42 | 102 | 3.2 | 8 | 10 | 128 | 3 | 4 | M16 | (5/8") | 18 | 2.71 |
| 100 | 108 114.3*) |
210 | 16 | 170 | 45 | 122 130 |
3.6 | 8 | 10 | 148 | 3 | 4 | M16 | (5/8") | 18 | 3.24 |
| 125 | 133 139.7*) |
240 | 18 | 200 | 48 | 148 155 |
4 | 8 | 10 | 178 | 3 | 8 | M16 | (5/8") | 18 | 4.49 |
| 150 | 159 168.3*) |
265 | 18 | 225 | 48 | 172 184 |
4.5 | 10 | 12 | 202 | 3 | 8 | M16 | (5/8") | 18 | 5.15 |
| 200 | 216 219*) |
320 | 20 | 280 | 55 | 230 236 |
5.9 | 10 | 15 | 258 | 3 | 8 | M16 | (5/8") | 18 | 7.78 |
| 250 | 267 273*) |
375 | 22 | 335 | 60 | 282 290 |
6.3 | 12 | 15 | 312 | 3 | 12 | M16 | (5/8") | 18 | 10.8 |
| 300 | 318 323.9*) |
440 | 22 | 395 | 62 | 335 342 |
7.1 | 12 | 15 | 365 | 4 | 12 | M20 | (3/4") | 23 | 14.0 |
| 350 | 368 355.6*) |
490 | 22 | 445 | 62 | 385 | 7.1 | 12 | 15 | 415 | 4 | 12 | M20 | (3/4") | 23 | 16.1 |
*) Outer dimameter of pipe corresponds to ISO
recommendation R64.
Material (to be specified by orderer):
St. 37-2 by DIN 17100 for temperature 300 °C
Weldable heat-treated steel for temperature > 300 °C.
Process: Machining the outside diameter, bore, gasket
surface, bevel end for welding, and bolt holes.
ANSI Dimension
Flanges inventory: