BS DD ENV 1329-2:2001
建筑结构内污物和废物排放用塑料管道系统(低温和高温) 未增塑聚氯乙烯(PVC-U) 合格评定指南
Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure. Unplasticized poly(vinyl chloride) (PVC-U)-Guidance for the assessment of conformity