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In the fields of petrochemicals, water supply, heating, industrial refrigeration, etc., most of the traditional inner layers of anti-corrosion and heat insulation measures use asbestos, ash or polyurethane, and the outer layer adopts asbestos cloth for anti-corrosion and heat preservation. The effect is not ideal. Qilu Petrochemical develops this type of polyethylene outer casing to use high-density polyethylene as raw material, product diameter, length and other types of indicators can be adjusted according to user needs; construction installation by the insulation material factory, the need for anti-corrosion insulation of steel pipe in poly In the ethylene sleeve, the polyurethane foam is injected in the middle to fully fill the gap between the steel pipe and the polyethylene sleeve, and finally the steel pipe, the sleeve and the insulation layer form a firm whole, so that the effect of anti-corrosion and heat preservation is achieved; The method can be added empty or buried underground. The entire construction is carried out on site and the process is quick and convenient.
Recently, Qilu Petrochemical launched a new type of polyethylene prefabricated insulation casing that can be overhead or buried, so that China's anti-corrosion and thermal insulation technology further. Compared with traditional direct-buried heat preservation materials, this new type of polyethylene pre-insulated heat-insulating casing has features of high mechanical strength, good sealing performance, strong corrosion resistance, low heat loss, and long service life.
February 07, 2019