美利体育登录入口官网:DIN EN ISO 15874-2/A1:2007 冷热水装置用塑料管道系统.聚丙烯(PP).第2部分:管道.修改件1
Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 2: Pipes - Amendment 1 (ISO 15874-2:2003/Amd 1:2007); English version of DIN EN ISO 15874-2:2003/A1:2007-09