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NS-EN 253:2009+A2:2015

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NS-EN 253:2019+A1:2023

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Omfang

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.

Dokumentinformasjon

  • Konsolidert fra SN
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 2015-10
  • Versjon: 1
  • Varetype: NAT
  • Products.Specs.pages
  • ICS 23.040.07
  • ICS 23.040.10
  • National Committee SN/K 51

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