Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber; German version EN 681-1:1996 + A1:1998— 19 стр.
Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation; German version EN 10226-1:2004— 14 стр.
Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics (ISO 1043-1:1997); German version EN ISO 1043-1:1999
Pipe joints and their elements for pipes of unplasticized polyvinylchloride (unplasticized PVC) under pressure; bushings, flanges, gasket, dimensions— 12 стр.