ONORM EN 253:2015现行
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：Osterreichisches Normungsinstitut
专家解读视频
2015 [15/12/2015]2013 [01/04/2013]2009 [15/06/2009]2007 [01/02/2007]2006 [01/04/2006]2003 [01/06/2003]1995 [01/02/1995]
UNI EN 253:2013 - Identical
BS EN 253:2009+A2:2015 - Identical
DIN EN 253 (2015-12) - Identical
UNE EN 253:2010 - Identical
I.S. EN 253:2009 - Identical
NF EN 253:2009 - Identical
EN 253:2009 - Identical
NEN EN 253:2009 - Identical
NS EN 253:2009 - Identical
SN EN 253:2009 - Identical
NBN EN 253:2009 - Identical
UNI EN 253:2016 - Identical
SS EN 253:2009 - Identical
