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