Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 5: Fitness for purpose of the system (ISO 1452-5:2009, corrected version 2010-03-01)
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5部分:系统适用性(ISO 1452-5-2009 修正版2010-03-01)