
Screwed Plugs; Tapped Holes; For Compression Fittings, Valves, Screw Plugs With Metric Thread, Type F And Type W Sealing With O-ring; General Outlay Of Types
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Screwed Plugs; Tapped Holes; For Compression Fittings, Valves, Screw Plugs With Metric Thread, Type F And Type W Sealing With O-ring; General Outlay Of Types
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频