
Plastic Piping Systems - Mechanical Joints Between Fittings And Pressure Pipes - Test Method For Leaktightness Under Negative Pressure (iso/dis 3459:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Plastic Piping Systems - Mechanical Joints Between Fittings And Pressure Pipes - Test Method For Leaktightness Under Negative Pressure (iso/dis 3459:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻