石油、石化及相关工业用的钢制球阀 承插焊孔的直径和深度
公称尺寸 DN |
8 |
10 |
15 |
20 |
25 |
32 |
40 |
50 |
承插焊孔的直径 |
14.1 |
17.5 |
21.7 |
27.0 |
33.8 |
42.5 |
48.6 |
61.1 |
承插焊孔的最小长度 |
9.5 |
9.5 |
10 |
13 |
13 |
13 |
13 |
16 |
注:承插焊孔的直径的允许骗差为 0+0.50 |
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