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Polyethylene pipes have smooth internal wall, so they do not overgrow from the inside with various types of deposits, garbage does not accumulate. Resistance to temperature drops, high flexibility is the advantages of polyethylene. There are various pipe stiffness classes on sale, so for any pipeline you can choose worthy materials. The prices are affordable, the variety is huge, the quality is high and this is all “Corsis”. In a special place, there are still two -layer profiled pipes with double walls, which are smooth from the inside and corrugated. Any sewage system with similar materials will turn out to be strong, reliable, durable and safe.