
Industrial valves - Isolating valves for low-temperature applications Part 2: Type testing (ISO 28921-2:2015); German and English version prEN ISO 28921-2:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Industrial valves - Isolating valves for low-temperature applications Part 2: Type testing (ISO 28921-2:2015); German and English version prEN ISO 28921-2:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻