Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges; German version EN 1092-1:2007— 130 стр.
Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance (ISO 8331:2016); German version EN ISO 8331:2016— 21 стр.
Rubber and plastics hoses and hose assemblies - Determination of electrical resistance and conductivity (ISO 8031:2009); German version EN ISO 8031:2009— 23 стр.
Contract Procedure for Building Works; Part C: General Technical Specifications for Building Works; Systems for Central Heating and Central Raw Water Heating— 21 стр.