
Gas Cylinder Valves For Cylinder Test Pressures Up To 300 Bar - Part 7: Gauges For Tapered Thread W 31,3 X 1/14 (acetylen)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Gas Cylinder Valves For Cylinder Test Pressures Up To 300 Bar - Part 7: Gauges For Tapered Thread W 31,3 X 1/14 (acetylen)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻