BS EN ISO 21225-2. Plastics piping systems for the trenchless replacement of underground pipeline networks. Part 2. Replacement off the line by horizontal directional drilling and impact moling— 26 стр.
Elastomeric seals. Materials requirements for pipe joint seals used in water and drainage applications. Cellular materials of vulcanized rubber— 24 стр.
Plastics piping systems for non-pressure underground drainage and sewerage. Polyethylene (PE). Specifications for pipes, fittings and the system— 36 стр.