Draft Document - Multilayer piping systems for hot and cold water installations inside buildings - Part 2: Pipes - Amendment 1 (ISO 21003-2:2008/DAM 1:2010); German version EN ISO 21003-2:2008/prA1:2010
文件草案.建筑物内冷热水装置用多层管道系统.第2部分:管道.修改件1(ISO 21003-2-2008/DAM 1-2010);德国版本EN ISO 21003-2:2008/prA1:2010