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 DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | P245GH / 1.0352 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | P250GH / 1.0460 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | P265GH / 1.0425 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | P355NH / 1.0565 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | S235JR / 1.0038 | M36 | Type H - with gasket groove | 98 |
|
| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | S355J2 / 1.0577 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | X10CrMoVNb9-1 / 1.4903 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN400 PN40 Type 11/Н EN 1092-1 | 585 | 462 | 135 | 406.4 | 50 | Type 11 - weld neck | 39 | Black | 400 | 0 | — | 16 | 12 | EN 1092-1 | P355QH1 / 1.0571 | M36 | Type H - with gasket groove | 98 |
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| Weld neck flange DN250 CL300 Type 11/B EN 1759-1 | 387.4 | 321 | 0 | 273 | 47.6 | Type 11 - weld neck | 28.6 | Black | 250 | 300 | — | 16 | 6.5 | EN 1759-1 | P235GH / 1.0345 | M27 | Type B - with connecting projection | 44.34 |
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| Weld neck flange DN250 CL300 Type 11/B EN 1759-1 | 387.4 | 321 | 0 | 273 | 47.6 | Type 11 - weld neck | 28.6 | Black | 250 | 300 | — | 16 | 6.5 | EN 1759-1 | X10CrMoVNb9-1 / 1.4903 | M27 | Type B - with connecting projection | 44.34 |
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