GB/T 5836.1-2018建筑排水用硬聚氯乙烯(PVC-U)管材国家标准
英文:Unplasticized poly(vinyl chloride) (PVC-U) pipes for soil and waste discharge inside buildings GB/T 5836.1-2018介绍: 国家...
英文:Unplasticized poly(vinyl chloride) (PVC-U) pipes for soil and waste discharge inside buildings GB/T 5836.1-2018介绍: 国家...