RO
SR EN 448:2004
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
This European Standard specifies requirements and test methods for fittings of prefabricated thermally insulated pipe-in-pipe assemblies comprising a steel service fitting from DN 20 to DN 1200, rigid polyurethane foam insulation and an outer casing of polyethylene for use in directly buried hot water networks with preinsulated pipe assemblies in accordance with prEN 253. This standard covers the following fittings: Bends, T-pieces, reducers and anchors. This standard applies only to insulated fitting assemblies for continuous operation with hot water at various temperatures in accordance with clause 1 of prEN 253:2002. Guidelines for quality inspection are given in annex A of this standard. Procedures for PE-welding are given in annex B of this standard. NOTE This standard does not include rules for calculation of loads and stresses.
Status :
Withdrawn
Approval date : 8/23/2004
Publish date : 8/24/2004
Withdrawal date : 7/31/2009
Number of pages : 32
ICS : 23.040.07 Pipelines and its parts for district heat,23.040.40 Metal fittings
Technical Committee : 302 - Space heating appliances, ventilation and room air conditioner
- Replaces SR EN 448:2002
- Normative reference SR EN 25817:1993
- Normative reference SR EN 10217-5:2003
- Normative reference SR EN 10216-2:2003
- Normative reference SR EN 253:2004
- Normative reference SR EN 12814-1:2001
- Normative reference SR EN 1418:2000
- Normative reference SR EN 10217-2:2003
- Replaced by SR EN 448:2009