DIN CEN/TS 12666-2:2012
非压力地下排水和污水管道用塑料管道系统.聚丙烯(PE).第2部分:一致性评估指南.德文版本CEN/TS 12666-2-2012
Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 2: Guidance for the assessment of conformity; German version CEN/TS 12666-2:2012