Plastics piping systems - elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping - test method for leaktightness under external hydrostatic pressure ; german version en 911 : 1995 塑料管道系統(tǒng).熱塑塑料壓力管道用的彈性密封環(huán)型接頭
Plastics piping systems . elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping . test method for leaktightness under external hydrostatic pressure 塑料管道系統(tǒng).熱塑塑料壓力管道用的彈性密封環(huán)型接頭和機(jī)械接頭.外部液壓條件下防漏密封試驗(yàn)方法
Plastics piping systems - elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping - test method for leaktightness under external hydrostatic pressure 塑料管道系統(tǒng).熱塑塑料壓力管道用的彈性密封環(huán)型接頭和機(jī)械接頭.外部流體靜壓條件下防漏密封試驗(yàn)方法