
Thermoplastics piping systems for underground non-pressure applications - Test method for leaktightness of elastomeric sealing ring type joints
出版:International Organization for Standardization

專家解讀視頻
Thermoplastics piping systems for underground non-pressure applications - Test method for leaktightness of elastomeric sealing ring type joints
出版:International Organization for Standardization
專家解讀視頻