Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure - Polyethylene (PE) - Part 2: Guidance for the assessment of conformity; German version ENV 1519-2:2001
建筑结构内土壤和废物排放(低温和高温)用塑料管道系统.聚乙烯(PE).第2部分:合格评定指南;德文版ENV 1519-2:2001