NS EN 253:2003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：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Describes requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks, comprising a steel service pipe from DN 20 to DN 1200, rigid polyurethane foam insulation and an outer casing of polyethylene.
SS EN 253:2003 - Identical
UNE EN 253:2005 - Identical
UNI EN 253:2007 - Identical
NF EN 253:2003 - Identical
I.S. EN 253:2003 - Identical
NBN EN 253:2003 - Identical
BS EN 253:2003+A2:2006 - Identical
SS EN 253 Ed. 3 (2009) - Identical
EN 253:2009 - Identical
NF EN 253:2009 - Identical
SN EN 253:2003 - Identical
NEN EN 253:2003 - Identical
ONORM EN 253:2007 - Identical
DIN EN 253 (2006-02) - Identical
