BS EN 17415-1:2020 pdf free.District cooling pipes一Bonded single pipe systems for directly buried cold water networks.Factory made pipe assembly of steel or plastic service pipe, polyurethane thermal insulation and a casing of polyethylene. BS EN 17415-1 This document specifies requirements, design and test methods for straight lengths of factory made thermally insulated pipe-in-pipe assemblies for directly buried district cooling distribution...