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NEN EN 448:2009被替代

District Heating Pipes - Pre-Insulated 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：Nederlands Normalisatie Instituut

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基本信息

標(biāo)準(zhǔn)編號： NEN EN 448:2009

發(fā)布時間：2009/3/1 0:00:00

標(biāo)準(zhǔn)類別：Standard

出版單位：Nederlands Normalisatie Instituut

標(biāo)準(zhǔn)頁數(shù)：34

標(biāo)準(zhǔn)簡介

Defines requirements and test methods for fittings of prefabricated thermally insulated pipe-in-pipe assemblies comprising a steel service fitting from DN 20 to DN 1200, rigid polyurethane foam insulation and an outer casing of polyethylene for use in directly buried hot water networks with pre-insulated pipe assemblies in accordance with EN 253.

標(biāo)準(zhǔn)備注

Draft issued in March 2014. (03/2014)

替代本標(biāo)準(zhǔn)的新標(biāo)準(zhǔn)

NEN EN 448:2015

等同采用的國際標(biāo)準(zhǔn)

BS EN 448:2009 - Identical

I.S. EN 448:2009 - Identical

ONORM EN 448:2009 - Identical

NF EN 448:2009 - Identical

NS EN 448:2009 - Identical

SS EN 448 Ed. 3 (2009) - Identical

UNI EN 448:2009 - Identical