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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

标准编号： NEN EN 448:2009

发布时间：2009/3/1 0:00:00

标准类别：Standard

出版单位：Nederlands Normalisatie Instituut

标准页数：34

标准简介

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.

标准备注

Draft issued in March 2014. (03/2014)

替代本标准的新标准

NEN EN 448:2015

等同采用的国际标准

NF EN 448:2015 - Identical

EN 448:2015 - Identical

BS EN 448:2015 - Identical

SS EN 448 Ed. 4 (2015) - Identical

NBN EN 448:2015 - Identical

UNE EN 448:2010 - Identical

NBN EN 448:2009 - Identical