Unplastified polyvinyl chloride is

Plastic sewage can be made of polyvinyl chloride, non -plasticized polyvinyl chloride and polypropylene. Polyvinyl chloride is excellent material for modern sewer systems. These pipes retain their properties even after many years of operation. They have increased mechanical strength and resistance to heat, but at the same time, at low temperatures, they become fragile, which in the conditions of Russian winter is not the most attractive quality. Unplastified polyvinyl chloride is best suited for the water supply of household, pressure or non-pressure sewer and so on. Polypropylene is impact -resistant at low temperatures and is inexpensive, but it is unstable to the effects of ultraviolet radiation.