This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded twin pipe assemblies for directly buried hot water networks in accordance with EN 13941-1, comprising two steel service pipes, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
The twin pipe assembly can also include the following additional elements: Measuring wires, spacers and diffusion barriers.
WITHDRAWN
SRPS EN 15698-1:2020
PUBLISHED
SRPS EN 15698-1:2025
60.60
Standard published
Apr 30, 2025