GB/T 19471.2-2004 标准详情
GB/T 19471.2-2004
现行
塑料管道系统 硬聚氯乙烯(PVC-U)管材弹性密封圈式承口接头 负压密封试验方法
Plastics piping systems--Elastomeric-sealing-ring-type socket joints of unplasticized poly(vinyl chloride)(PVC-U)for use with PVC-U pipes--Test method for leaktightness under negative pressure