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閥門中心型ISO B TYPE
| 船用閥門中心型閥座圈: | |
 | Instruction：ISO STANDARD（B TYPE） |
| Instruction： | |
 |  |
Item | Size | фA | фB | фC |
1 | DN50 | 83 | 54 | 45 |
2 | DN65 | 105 | 69 | 48 |
3 | DN80 | 118 | 83 | 48 |
4 | DN100 | 139 | 102.6 | 54 |
5 | DN125 | 170 | 126.6 | 58 |
6 | DN150 | 197 | 150 | 59 |
7 | DN175 | 214 | 170 | 63 |
8 | DN200 | 247 | 195 | 63 |
9 | DN250 | 297 | 245 | 71 |
10 | DN300 | 349 | 295 | 81 |
11 | DN350 | 406 | 345 | 81 |
12 | DN400 | 459 | 395 | 105 |
13 | DN450 | 507 | 445 | 117 |
14 | DN500 | 560 | 473 | 130 |
15 | DN500 | 560 | 473 | 232 |
16 | DN550 | 610 | 523 | 157 |
17 | DN600 | 660 | 573 | 157 |
18 | DN600 | 660 | 572.5 | 270 |
19 | DN700 | 765 | 672.5 | 295 |
20 | DN800 | 870 | 773 | 193 |