NF EN 448:1994被替代
District Heating Pipes - Preinsulated Bonded Pipe Systems For Directly Buried Hot Water Networks - Fitting Assemblies For Steel Service Pipes, Polyurethane Thermal Insulation And Outer Casing Of Polyethylene
出版：Association Francaise de Normalisation
专家解读视频
Specifies requirements and test methods for fittings of prefabricated thermally insulated pipe in pipe assemblies, comprising a steel service fitting from DN 20 to DN 600, rigid polyurethane foam insulation and an outer casing of polyethylene. Coverage includes: steel parts, casing pipes, marking, and fitting assemblies. Also gives detailed definitions and annexes.
Indice de Classement: E39-012PR.
(05/2003)
PR NF EN 448 October 2007.
(10/2007)
SN EN 448:2003 - Identical
NEN EN 448:2003 - Identical
ONORM EN 448:2003 - Identical
BS EN 448:2003 - Identical
DIN EN 448 (1994-12) - Identical
I.S. EN 448:2003 - Identical
NBN EN 448:2003 - Identical
UNI EN 448:1995 - Identical
NS EN 448 Ed. 2 (2003) - Identical
UNE EN 448:2005 - Identical
SS EN 448 Ed. 2 (2003) - Identical
