DIN EN 15632-2-2015 区域供暖管道.预隔热弹性管道系统.第2部分:黏结塑料供水管.试验方法和要求.德文版本EN 15632-2-2010+A1-2014
District heating pipes - Pre-insulated flexible pipe systems - Part 2: Bonded plastic service pipes - Requirements and test methods; German version EN 15632-2:2010+A1:2014