PVC pipes and fittings for external sewer systems are intended for gravity transport of wastewater with a pH value of 2–12 and temperatures up to +40ºC or short-term up to +60ºC. Sewer pipes are used in underground gravity wastewater systems laid in the ground under or beside roads, or in other places used for engineering utilities, as well as in culverts through road embankments or bridge structures built along road routes. The raw material used for production 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 in colour. The smooth surface of the products prevents the formation of scale and deposits. A simple and functional joining system is used for connecting sewer pipes. Each pipe has a socket with a siliconised seal. This connection is very tight and installation is trouble-free.
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