Pipe Rehabilitation Technology Used

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The technological process of recovery pipes used in the initial stage involves the removal of isolation and purification of both internal and external surfaces of pipes of various contaminants (rust, scale, mineral and biological deposits, old paint). Cleaning involves two stages: primary and secondary. The first stage is called rough because to clean the inside surface of the used tubes used multirowed scraper and piston, while cleaning its exterior surface, a special cleaning machine with rotary chisel (brush) mechanism. The second stage – the fine cleaning of both surfaces – with high efficiency by using the latest patented thermo-abrasive cleaning methods. The essence of this method is that the clean surface exposed to short-term high-temperature (up to 10000 C) and high-speed (speed at the nozzle exit up to 350 m / s) combustion products, diesel fuel, and abrasives. Using this method allows you to perfectly clean the surface of used tubes of layers with thickness up to 2 mm. Further technology refurbishment of used tubes involves sandblasting, cutting bevels and applying cps (cement-sand insulation) on the inner surface of pipes. This treatment protects the pipe from corrosion, prevents the appearance on its inner surface a variety of pollutants and sediments, with an environmentally friendly and least expensive type of coverage. Depending on customer requirements can be carried out crosscut weld and marked isolation by gas, water, heat, or sewer.