国外阀门材料常用技术标准 镍合金棒材和线材拉制的六角、八角和方形线材的尺寸公差
规定尺寸A,in.(mm) | 尺寸公差,in.(mm) | |
上偏差(+) | 下偏差(-) | |
1/2(12.70) | 0 | 0.004(0.10) |
<1/2(12.70)~≥5/16(7.94) | 0 | 0.003(0.08) |
<5/16(7.94)~≥1/8(3.18) | 0 | 0.002(0.05) |
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