District heating pipes - Bonded single and twin pipe systems for buried hot water networks - Surveillance systems; German version EN 14419:2019— 28 стр.
District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene; German version EN 448:2019— 37 стр.
District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene; German version EN 253:2019— 49 стр.
District heating pipes - Bonded twin pipe systems for directly buried hot water networks - Part 1: Factory made twin pipe assembly of steel service pipes, polyurethane thermal insulation and one casing of polyethylene; German version EN 15698-1:2019— 17 стр.
District heating pipes - Bonded twin pipe systems for directly buried hot water networks - Part 2: Factory made fitting and valve assemblies of steel service pipes, polyurethane thermal insulation and one casing of polyethylene; German version EN 15698-2:2019— 15 стр.
