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偏差为0+0.50 |
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