Overview of steel-plastic composite pipe and large diameter coated steel pipe

Steel-plastic composite pipe with hot-dip galvanized steel pipe as the matrix, through the powder melt spraying technology in the inner wall (when required external wall can also) coated plastic, excellent performance. Compared with galvanized pipe, it has the advantages of corrosion resistance, no rust, no fouling, smooth flow, clean non-toxic, long service life and so on. According to the test, steel-plastic composite pipe life of galvanized pipe more than three times times. Compared with the plastic pipe, with high mechanical strength, pressure, heat resistance and so on. Because the matrix is steel pipe, so there is no brittleness, aging problem. Can be widely used in water, gas, chemical products, such as fluid transportation and heating engineering, galvanized pipe upgrading products.

　　Because of its installation and use of traditional galvanized pipe is basically the same, the form of pipe is exactly the same, and can replace the aluminum-plastic composite pipe in the large-caliber water transport to play a role, well received by users, has become the pipeline market, one of the most competitive products. Coated steel pipe is a large diameter spiral welded pipe and high-frequency welded pipe based on plastic coating, the largest pipe mouth diameter of 1200mm, can be applied according to different needs of polyvinyl chloride (PVC), polyethylene (PE), epoxy resin (epozy) and other different properties of the plastic coating, good adhesion, strong corrosion resistance, can withstand acid, Alkali and other chemical corrosion, non-toxic, non-corrosive, abrasion resistance, impact resistance, strong penetration, smooth surface of the pipeline, do not adhere to any material, can reduce the resistance when conveying, improve flow and transport efficiency, reduce loss of transmission pressure.

　　Coating solvent-free, no exudate, and therefore will not pollute the transported media, so as to ensure the purity of the fluid and sanitary, in the 40 ℃ to +80℃ range can be used alternately hot and cold cycle, not aging, not cracked, so can be used in cold zone and other harsh environment. Large-diameter coated steel pipe is widely used in water, natural gas, petroleum, chemical, pharmaceutical, communications, electricity, ocean and other engineering fields.