EN 15632-4:2009 District heating pipes - Pre-insulated flexible pipe systems - Part 4: Bonded system with metal service pipes - Requirements and test methods
This European Standard provides requirements and test methods for flexible; pre-insulated; directly buried district heating pipe assemblies with metallic service pipes and bonding between the layers of the pipes and thermal insulation materials of polyurethane or polyisocyanurate foam; the casing pipes being made of polyethylene.This European Standard is valid for maximum operating temperatures up to 140 ℃ and pressures up to 25 bar for a design lifetime of at least 30 years. NOTE For higher temperatures or for the transport of other fluids; for example potable water; additional requirements and testing is needed. Such requirements are not specified inThis European Standard.
EN 15632-4:2009 history
2009EN 15632-4:2009 District heating pipes - Pre-insulated flexible pipe systems - Part 4: Bonded system with metal service pipes - Requirements and test methods