Weld neck flanges
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| Name | Center distance of mounting holes, K (mm) | Collar diameter at base, N (mm) | Collar height, H2 (mm) | Diameter of the collar for welding, A (mm) | Flange thickness, C2 (mm) | Flange type | Hole diameter, L (mm) | Material | Nominal diameter, DN | Nominal pressure, Class | Nominal size, NPS (inch) | Number of holes, n | Radius of curvature, R1 (mm) | Standard | Steel grade | Thread | Type of connecting surface | Weight 1 pc (kg) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weld neck flange DN350 CL300 Type 11/E EN 1759-1 | 514.4 | 425 | 0 | 355.6 | 54 | Type 11 - weld neck | 31.8 | Black | 350 | 300 | — | 20 | 9.5 | EN 1759-1 | 16Mo3 / 1.5415 | M30 | Type E - with a ledge | 89.1 |
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| Weld neck flange DN350 CL300 Type 11/E EN 1759-1 | 514.4 | 425 | 0 | 355.6 | 54 | Type 11 - weld neck | 31.8 | Black | 350 | 300 | — | 20 | 9.5 | EN 1759-1 | P245GH / 1.0352 | M30 | Type E - with a ledge | 89.1 |
|
| Weld neck flange DN350 CL300 Type 11/E EN 1759-1 | 514.4 | 425 | 0 | 355.6 | 54 | Type 11 - weld neck | 31.8 | Black | 350 | 300 | — | 20 | 9.5 | EN 1759-1 | S235JR / 1.0038 | M30 | Type E - with a ledge | 89.1 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | X10CrMoVNb9-1 / 1.4903 | M20 | Type C - with tongue | 5.18 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | 11CrMo9-10 / 1.7383 | M20 | Type C - with tongue | 5.18 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | 13CrMo4-5 / 1.7335 | M20 | Type C - with tongue | 5.18 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | 16Mo3 / 1.5415 | M20 | Type C - with tongue | 5.18 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | P355NH / 1.0565 | M20 | Type C - with tongue | 5.18 |
|
| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | 12Ni14 / 1.5637 | M20 | Type C - with tongue | 5.18 |
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| Weld neck flange DN25 PN320 Type 11/C EN 1092-1 | 115 | 68 | 78 | 33.7 | 34 | Type 11 - weld neck | 22 | Black | 25 | 0 | — | 4 | 4 | EN 1092-1 | P355QH1 / 1.0571 | M20 | Type C - with tongue | 5.18 |
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