Plastics piping systems . injection - moulded thermoplastics fittings for elastic sealing ring type joints for pressure piping . test method for resistance to a short - term internal pressure without end thrust 塑料管道系統(tǒng).壓力管道用彈性密封圈型接頭的注模熱塑配件.耐無(wú)端推力短暫內(nèi)壓力性能的試驗(yàn)方法
Plastics piping systems - injection - moulded thermoplastics fittings for elastic sealing ring type joints for pressure piping - test method for resistance to a short - term internal pressure without end thrust 塑料管道系統(tǒng).壓力管道的彈性密封圈式連接件用注模制熱塑塑料性配件.耐無(wú)部端推力的快速內(nèi)壓的試驗(yàn)方法