DIN EN 14758-1-2012 地下无压力排水和排污用塑料管道系统.有矿物调节剂的聚丙烯(PP-MD)管道系统.第1部分:管,管件和系统规范
Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene with mineral modifiers (PP-MD) - Part 1: Specifications for pipes, fittings and the system; German version EN 14758-1:2012