GB/T 18993.1-2020冷热水用氯化聚氯乙烯(PVC-C)管道系统第1部分:总则标准
英文:Chlorinated poly (vinyl chloride) (PVC-C) piping systems for hot and cold water installations—Part 1:General GB/T 189...
英文:Chlorinated poly (vinyl chloride) (PVC-C) piping systems for hot and cold water installations—Part 1:General GB/T 189...