BS EN 448:2003 PDF

Scope: 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 EN 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 EN 253:2003. 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.

BS EN 448:2003 history

2019 BS EN 448:2019 District heating pipes. Bonded single pipe systems for directly buried hot water networks. Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene
2015 BS EN 448:2015 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
2009 BS EN 448:2009 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
2003 BS EN 448:2003 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