Features of Plate Flat Welding Flange
- Corrosion resistance, high pressure resistance, long life, easy installation.
- The smooth welding joints are tightly connected, and the workmanship is neat and burr-free.
- Strong sealing and high matching degree.
Nominal diameter | Piping outer diameter (mm) | Flange outer diameter (mm) | Flange inner diameter (mm) | Total thickness (mm) | Center distance(mm) | Number of holes |
DN15 | 18 | 95 | 19 | 14 | 65 | 4 |
DN20 | 25 | 105 | 26 | 16 | 75 | 4 |
DN25 | 32 | 115 | 33 | 16 | 85 | 4 |
DN32 | 38 | 140 | 39 | 18 | 100 | 4 |
DN40 | 45 | 150 | 46 | 18 | 110 | 4 |
DN50 | 57 | 165 | 59 | 19 | 125 | 4 |
DN65 | 76 | 185 | 78 | 20 | 145 | 8 |
DN80 | 89 | 200 | 91 | 20 | 160 | 8 |
DN100 | 108 | 220 | 110 | 22 | 180 | 8 |
DN125 | 133 | 250 | 135 | 22 | 210 | 8 |
DN150 | 159 | 285 | 161 | 24 | 240 | 8 |
DN200 | 219 | 340 | 222 | 26 | 295 | 12 |
DN250 | 273 | 405 | 276 | 29 | 335 | 12 |
DN300 | 325 | 460 | 328 | 32 | 410 | 12 |
DN350 | 377 | 520 | 381 | 35 | 470 | 16 |
DN400 | 426 | 580 | 430 | 38 | 525 | 16 |
DN450 | 480 | 640 | 485 | 42 | 585 | 20 |
DN500 | 530 | 715 | 535 | 46 | 620 | 20 |
DN600 | 630 | 840 | 636 | 52 | 770 | 20 |
Note: DN15~DN150 specifications, PN10 and PN16 are the same size, and the sizes after DN200 are different.
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