RO
SR EN 253:1997
Preinsulated bonded pipe systems for underground hot water networks. Pipe assembly of steel service pipes polyurethane insulation and outher casing of polyethylene
This European standard specifies requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for underground hot water networks, comprising a steel service pipe from DN 20 to DN 600, rigid polyurethane foam insulation and an outer casing of high density polyethylene. This standard applies only to injected (poured) insulated pipe assemblies, for continuous operation with hot water at various temperatures up to 120°C and for short term operation with a peak temperature up to 140°C.
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Status :
Withdrawn
Approval date : 8/12/1996
Publish date : 8/13/1996
Withdrawal date : 8/23/2004
Number of pages : 30
ICS : 23.040.07 Pipelines and its parts for district heat,23.040.10 Iron and steel pipes
Technical Committee : 281 - Buildings thermal performance of and buildings components
- Normative reference SR ISO 1183:1994
- Normative reference SR ISO 1133:1993
- Replaced by SR EN 253:2004
- Amended by SR EN 253:1997/C1:1997