DIN EN 448 (2016-02)现行
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
SN EN 448:2016 - Identical
NF EN 448:2015 - Identical
NS EN 448:2015 - Identical
EN 448:2015 - Identical
NEN EN 448:2015 - Identical
UNE EN 448:2017 - Identical
UNI EN 448:2016 - Identical
