钢制阀门 一般要求
焊接端部尺寸
单位为毫米
公称尺寸DN |
50 |
65 |
80 |
100 |
150 |
200 |
250 |
300 |
350 |
400 |
≥500 |
A |
62 |
75 |
91 |
117 |
172 |
223 |
278 |
329 |
360 |
413 |
- |
A的偏差 |
-3.5 |
-3 |
- |
||||||||
B的偏差 |
±0.8 |
±1.5 |
±3.0 |
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