ISO 13845:2000 塑料管道系统 用于硬聚氯乙烯管道的弹性密封环式承口连接件 内压下角度偏转密封试验方法
Plastics piping systems - Elastomeric-sealing-ring-type socket joints for use with unplasticized poly(vinyl chloride) (PVC-U) pipes - Test method for leaktightness under internal pressure and with angular deflection