British Standards Document
BS EN 253
District heating pipes. Bonded single pipe systems for directly buried hot water networks. Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene

https://doi.org/10.3403/30372128U

BS EN 253 is maintained by RHE/9. The current release of this standard is:

BS EN 253:2019+A1:2023 District heating pipes. Bonded single pipe systems for directly buried hot water networks. Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene

https://doi.org/10.3403/30372128 (published 04/11/2019)

This standard is available from the following sources:

Other historical versions of this standard document also exist: