DIN EN 13476-2:2020 用于無壓地下排水和污水處理的塑料管道系統. 未增塑聚(氯乙烯)(PVC-U)、聚丙烯(PP)和聚乙烯(PE)的結構壁管道系統. 第2部分: 光滑管道和配件規范內外表面和系統,A型; 德文版 EN 13476-2-2018+A1-2020
Plastics piping systems for non-pressure underground drainage and sewerage - Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) - Part 2: Specifications for pipes and fittings with smooth