美利体育登录入口官网:DD ENV 1453-2-2000
建筑物内污物和废水排放(低和高温)带结构壁管道的塑料管道系统.未增塑聚氯乙烯(PVC-U).第2部分:合格评定指南
Plastics piping systems with structured wall pipes for soil and waste discharge (low and high temperature) inside buildings - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Guidance for the assessment of conformity