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Norm

ÖNORM EN 253

Issue date: 2013 04 01

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

This European Standard specifies requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot w...
Withdrawn: 2015 12 15
Publisher:
Austrian Standards International
Format:
Digital | 52 Pages
Language:
German | English | Download GER/ENG
Currently valid:
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. This standard applies only to insulated pipe assemblies, for continuous operation with hot water at various temperatures up to 120 °C and occasionally with a peak temperature up to 140 °C. The estimation of expected thermal life with continuous operation at various temperatures is outlined in Annex B.
ÖNORM EN 253
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ÖNORM EN 253
1995 02 01
Preinsulated bondes pipe systems for underground hot water networks - Pipe assembly of steel service...
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ÖNORM EN 253
1991 11 01
Preinsul. bond. pipe syst.f.underground hot water networks - Pipe assembly of steel service pipes, p...
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