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锻造角式高压阀门 缺陷当量直径_阀门标准
|
阀门的公称尺寸 DN |
单个缺陷当量直径 ≤ |
端部管段缺陷当量直径 ≤ |
| 3～25 | φ3 | φ4 |
| 32～50 | φ4 | |
| 65～150 | φ5 |
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