DIN EN ISO 15874-3:2018
冷热水装置用塑料管道系统 聚丙烯(PP) 第3部分:配件(ISO 15874-3:2013 + Amd. 1:2018)
Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 3: Fittings (ISO 15874-3:2013 + Amd. 1:2018); German and English version EN ISO 15874-3:2013 + A1:2018