GB 9644-1988

硬聚氯乙烯(PVC-U)饮水管材和管件 铅、锡、镉、汞的萃取方法及允许值

Unplasticized polyvinyl chloride (PVC-U) pipes and fittings for drinking water supply--Extractability of lead tin、cadmium and mercury occurring as impurities--Test method and pemitted levels

中国标准分类号： G(化工) ； G33(塑料型材) | 实施日期：1989-02-01