DIN EN 253 (2013-05)被替代
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene (includes Amendment A1:2013)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻
NBN EN 253:2009 - Identical
SN EN 253:2009 - Identical
EN 253:2009 - Identical
NF EN 253:2009 - Identical
UNE EN 253:2010 - Identical
UNI EN 253:2013 - Identical
NEN EN 253:2009 - Identical
BS EN 253:2009+A2:2015 - Identical
NS EN 253:2009 - Identical
