Ключевые слова:
Pipes, Pipe fittings, Pipe connections, Welding, Steels, Stainless steels, Spigot-and-socket joints, Waste-water drainage, Pipelines, Drainage, Sealing rings, Dimensions, Dimensional tolerances, Tolerances (measurement), Designations, Length, Preferred sizes, Bend couplings, Pipe couplings, Angular, Shape