Ключевые слова:
Drainage, Plastic pipelines, Drainpipes, Pipework systems, Conformity, Quality control, Designations, Flexibility, Underground, Mechanical testing, Sewers, Sewerage, Dimensions, Concretes, Plastics, Pipes, Drainpipes, Reinforced materials, Plastic pipelines, Drainage, Strength of materials, Marking, Polyesters, Pipe couplings, Crushing tests, Pipe fittings, Underground, Strength of materials, Polyesters, Concretes, Pipework systems, Flexibility, Marking, Plastics, Quality control, Pipe fittings, Mechanical testing, Designations, Reinforced materials, Pipe couplings, Conformity, Sewerage, Crushing tests, Pipes, Sewers, Dimensions