Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 7: Guidance for the assessment of conformity; German version CEN/TS 1452-7:2014
供水和埋地及地上压力排水和排污用塑料管道系统.未增塑聚氯乙烯(PVC-U).第7部分:合格评定指南;德文版CEN/TS 1452-7:2014