DIN EN 12201-3:2013 供水, 压力条件下排水和污水用塑料管道系统. 聚乙烯 (PE). 第3部分:配件; 德文版本EN 12201-3-2011+A1-2012
Plastics piping systems for water supply, and for drainage and sewerage under pressure.Polyethylene (PE).Part 3: Fittings; German version EN 12201-3:2011+A1:2012