标准查询 标准查询在螺纹上进行压力密封连接的管子及管件的管螺纹规范(米制尺寸)
Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads (metric dimensions)
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标准查询Specification for pipe threads for tubes and fittings where pressure-tight joints are made on the threads (metric dimensions)
