prBAS EN 448:2026
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
General information
Status:Project
Number of pages:30
Adoption method:Proglašavanje
Language:engleski
Edition:4.
Realization date:09.10.2025
Forseen date for next stage code:21.10.2025
Technical committee:BAS/TC 47, Appliances and systems for heating and refrigeration
ICS:
23.040.45, Plastics fittings
23.060.01, Valves in general
23.040.07, Pipelines and its parts for district heat
23.060.01, Valves in general
23.040.07, Pipelines and its parts for district heat
Abstract
This document specifies requirements and test methods for factory made thermally insulated bonded fitting assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, in most cases a steel fitting, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
The fitting assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document specifies the characteristics of the following fitting assemblies:
- bends, T-pieces, and reducers.
This document applies to fitting assemblies with a design pressure of at least 1,6 MPa.
Lifecycle
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Original document and degree of correspondence
EN 448:2025, identical
Relation to BAS standards
Work material
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