BS EN 15698-2. District heating pipes. Bonded twin pipe systems for directly buried hot water networks - Factory made fitting and valve assemblies of steel service pipes polyurethane thermal insulation and one casing of polyethylene

BS EN 15698-2. District heating pipes. Bonded twin pipe systems for directly buried hot water networks - Factory made fitting and valve assemblies of steel service pipes polyurethane thermal insulation and one casing of polyethylene

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