EN
SR EN 253:2009
Conducte pentru încălzire districtuală. Sisteme de conducte preizolate pentru reţele subterane de apă caldă. Ansamblu de conducte de oţel, izolaţie termică de poliuretan şi manta exterioară de polietilenă
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.
Status :
Anulat
Data aprobării : 30.06.2009
Data publicării : 02.07.2009
Data anulării : 28.06.2013
Număr de pagini : 51
ICS : 23.040.07 Conducte si partile lor pentru termoficare,23.040.10 Tevi si tuburi din fonta si otel
Comitet tehnic : 302 - Instalaţii de încălzire, ventilare şi condiţionare a aerului
- Inlocuieste SR EN 253:2004
- Inlocuieste SR EN 253:2004/A2:2007
- Inlocuieste SR EN 253:2004/A1:2006
- Inlocuit prin SR EN 253+A1:2013