DIN EN ISO 15874-2-2013 冷热水装置用塑料管道系统.聚丙烯(PP).第2部分:管(ISO 15874-2-2013).德文和英文版本EN ISO 15874-2-2013
Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 2: Pipes (ISO 15874-2:2013); German and English version EN ISO 15874-2:2013