EN 489:2003 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
2009EN 489:2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes@ polyurethane thermal insulation and outer casing of polyethylene
2003EN 489:2003 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
1994EN 489:1994 Preinsulated Bonded Pipe Systems for Underground Hot Water Networks - Joint Assembly for Steel Service Pipes, Polyurethane Thermal Insulation and Outer Casing of Polyethylene