给水用硬聚氯乙烯(PVC-U)管材
Unplasticized poly (vinyl chloride)(PVC-U) pipes for water supply
Unplasticized poly (vinyl chloride)(PVC-U) pipes for water supply
Unplasticized poly (vinyl chloride)(PVC-U) pipes for water supply [ISO 4422:1996,Pipes and fittings made of unplasticied poly(vinyl chloride)(PVC-U) for water supply-Specifications,NEQ]