DIN EN 1852-1:2009 地下排水和排污水用塑料管道系统.聚丙烯(PP).第1部分:管道,配件和系统规范,英文版本DIN EN 1852-1:2009-07
Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene (PP) - Part 1: Specifications for pipes, fittings and the system; English version of DIN EN 1852-1:2009-07