This European Standard was approved by CEN on 5 December 2008. 50p.
This European Standard specifies 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 15 to DN 1200, rigid polyurethane foam
insulation and an outer casing of polyethylene. The pipe assembly
may also include the following additional elements: measuring
wires, spacers and diffusion barriers.
EN 253: 2009 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 (Eng)
- формат pdf
- размер 458.5 КБ
- добавлен 22 января 2012 г.
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