DIN EN 253 (2006-02)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
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
Suspended until publication of a revised English text, due to a new German edition. (07/2009)
EN 253:2009 - Identical
SS EN 253:2003 - Identical
NF EN 253:2009 - Identical
UNE EN 253:2005 - Identical
NS EN 253:2003 - Identical
UNI EN 253:2007 - Identical
NF EN 253:2003 - Identical
I.S. EN 253:2003 - Identical
NBN EN 253:2003 - Identical
BS EN 253:2003+A2:2006 - Identical
ONORM EN 253:2007 - Identical
NEN EN 253:2003 - Identical
SN EN 253:2003 - Identical
