Ключевые слова:
Polypropylene, Drainpipes, Polyethylene, Sewage engineering, Pipes, Performance, Unplasticized polyvinyl chloride, Sewerage, Drainage, Marking, Mechanical behaviour of materials, Manholes, Water supply and waste systems (building, Plastics, Underground, Pipework systems, Physical properties of materials, Sewers, Performance testing, Dimensions