BS EN ISO 13845:2000 塑料管道系统.与未增塑聚氯乙烯管一起使用的弹性密封环式套筒接头.内压下角度偏转密封试验
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