
Pipe Threads Where Pressure-tight Joints Are Not Made On The Threads - Part 1: Dimensions, Tolerances And Designation - Limits Of Size
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Pipe Threads Where Pressure-tight Joints Are Not Made On The Threads - Part 1: Dimensions, Tolerances And Designation - Limits Of Size
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频