DIN EN ISO 15874-3-2013
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).德文和英文版本EN ISO 15874-3-2013
Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 3: Fittings (ISO 15874-3:2013); German and English version EN ISO 15874-3:2013