PVC pipes and fittings for external sewer systems are intended for pressureless transport of wastewater with a pH value of 2–12 and a temperature up to +40 ºC or briefly up to +60 ºC. Sewer pipes are used in underground pressureless wastewater systems laid in the ground under or beyond a road, or in other places used for engineering utilities, as well as in culverts through road embankments or under bridge structures built along road routes. The raw material is unplasticised PVC-U (polyvinyl chloride), a material with high strength, impact resistance and resistance to many chemicals. The pipes and fittings are orange-brown. The smooth surface prevents limescale and sediment build-up. A simple and functional joint system is used to connect the sewer pipes. Each pipe has a socket with a siliconised seal. The joint is very tight and installation is trouble-free.
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