Ключевые слова:
Thickness, Unplasticized polyvinyl chloride, Underground, Leak tests, Spigot-and-socket joints, Pipe couplings, Drainage, Diameter, Drainpipes, Impact strength, Stiffness, Dimensional tolerances, Plastic pipelines, Softening point, Plastics, Dimensions, Thermal resistance, Testing conditions, Length, Recycling, Pipe fittings, Pipes, Size, Deformation, Polyvinyl chloride, Water supply and waste systems (buildings), Shape, Sealing rings, Sewers, Designations, Performance, Chemical-resistance tests, Marking, Pressure testing, Colour