Nominal diameter | Chief | The flange diameter | Center dirde of fange bolt hole | Connecting bolts |
| DN50 | 200mm | 165mm | 125mm | 4-M16 |
| DN65 | 200mm | 185mm | 145mm | 4-M16/8-M16 |
| DN80 | 225mm | 200mm | 160mm | 8-M16 |
| DN100 | 250mm | 220mm | 180mm | 8-M16 |
| DN125 | 250mm | 250mm | 210mm | 8-M16 |
| DN150 | 300mm | 285mm | 240mm | 8-M20 |
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