BS EN 489-2009 pdf download.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. The requirements of this BS EN...
BS EN 448:2015 pdf download
BS EN 448:2015 pdf download.District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene. EN 448 has been...