NS EN 448:2015現行
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：Norwegian Standards (Norges Standardiseringsforbund)
專家解讀視頻
2015 [01/02/2016]2009 [01/05/2009]2003 [11/04/2003]1994 AC 1995 [01/01/0001]1994 [01/01/0001]
UNE EN 448:2010 - Identical
EN 448:2015 - Identical
BS EN 448:2015 - Identical
NF EN 448:2015 - Identical
NBN EN 448:2015 - Identical
I.S. EN 448:2015 - Identical
SS EN 448 Ed. 4 (2015) - Identical
NEN EN 448:2015 - Identical
ONORM EN 448:2016 - Identical
DIN EN 448 (2016-02) - Identical
UNI EN 448:2009 - Identical
SN EN 448:2009 - Identical
UNI EN 448:2016 - Identical
UNE EN 448:2017 - Identical
SN EN 448:2016 - Identical
BS EN 448 : 2015 - Identical
