标准查询 标准查询非螺纹密封连接管螺纹.第1部分:标注,尺寸和公差
Pipe threads where pressure-tight joints are not made on the threads; Part 1 : Designation, dimensions and tolerances
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标准查询Pipe threads where pressure-tight joints are not made on the threads; Part 1 : Designation, dimensions and tolerances
