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 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 DN1600 PN16 Type 11/E EN 1092-1 | 1820 | 1668 | 204 | 1626 | 102 | Type 11 - weld neck | 56 | Black | 1600 | — | 40 | 16 | EN 1092-1 | P355QH1 / 1.0571 | M52 | Type E - with a large protrusion | 760 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | X10CrMoVNb9-1 / 1.4903 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | 11CrMo9-10 / 1.7383 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | 13CrMo4-5 / 1.7335 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | 16Mo3 / 1.5415 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | P355NH / 1.0565 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | 12Ni14 / 1.5637 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | P355QH1 / 1.0571 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | P265GH / 1.0425 | M39 | Type D - with groove | 145 |
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| Weld neck flange DN150 PN400 Type 11/D EN 1092-1 | 390 | 302 | 225 | 219.1 | 105 | Type 11 - weld neck | 42 | Black | 150 | — | 12 | 10 | EN 1092-1 | P250GH / 1.0460 | M39 | Type D - with groove | 145 |
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