UNE EN 448:2017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：Asociacion Espanola de Normalizacion
專家解讀視頻
2017 [14/06/2017]2010 [01/12/2010]2005 [26/01/2005]
EN 448:2015 - Identical
BS EN 448:2015 - Identical
NF EN 448:2015 - Identical
NBN EN 448:2015 - Identical
SN EN 448:2016 - Identical
UNI EN 448:2016 - 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
NS EN 448:2015 - Identical
