Ключевые слова:
Plastics, Polymers, Pipework systems, Plastic pipelines, Water, Pipes, Water supply engineering, Water supply (buildings), Unplasticized polyvinyl chloride, Polyvinyl chloride, Extruding, Pipe fittings, Spigot-and-socket joints, Water supply, Water mains, Underground, External, Internal, Buildings, Pressure pipes, Temperature, Cold-water supply systems, Potable water, Size, Classification systems, Colour codes