GB/T 28799.5-2020冷热水用耐热聚乙烯(PE-RT)管道系统第5部分:系统适用性标准
英文:Polyethylene of raised temperature resistance (PE-RT) piping systems for hot and cold water installations—Part 5: Fit...
英文:Polyethylene of raised temperature resistance (PE-RT) piping systems for hot and cold water installations—Part 5: Fit...