BS EN 253:2009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：British Standards Institution
专家解读视频
© British Standards Institution 2013
UNI EN 253:2013 - Identical
UNE EN 253:2010 - Identical
NF EN 253:2009 - Identical
EN 253:2009 - Identical
NBN EN 253:2009 - Identical
ONORM EN 253:2013 - Identical
ONORM EN 253:2009 - Identical
NEN EN 253:2009 - Identical
UNI EN 253:2009 - Identical
