Views: 6 Author: Site Editor Publish Time: 2022-05-10 Origin: Site
IPN8710 non-toxic drinking water anti-corrosion steel pipe should be coated with topcoat within 16 hours after anti-rust treatment, and topcoat within 8 hours in humid and cold areas and coastal cities, otherwise it will cause secondary corrosion and must be cleaned with a wire brush.
IPN8710 anti-corrosion steel pipe derusting method: clean up the welding position of the IPN8710 anti-corrosion steel pipe that has been pre-painted with shop topcoat during transportation and assembly, the damaged position and defects caused by heat treatment, and the damaged position caused by hot work with an electric grinding wheel and wire brush; For white rust (zinc salt) coated with zinc powder topcoat and eroded by air, use a manual or electric wire brush and clean water; for IPN8710 anti-corrosion steel pipe with high hardness two-component curing coating, the paint layer must be roughened Chemically treated and cleaned with sandpaper and wire brush.
Long-distance waterproof steel pipes will be corroded by various environmental media, among which electrochemical corrosion and biological corrosion are the main corrosion factors.
Steel-plastic composite pipes and ductile iron pipes are recommended for large-diameter water delivery system projects, but steel-plastic composite pipes are more cost-effective. The steel pipe has good ductility, complete structure, and convenient construction, and is not only suitable for ground laying but also suitable for overhead river crossing, pouring, and pipe jacking construction operations.
Using anti-corrosion paint to protect the inner and outer wall surfaces of steel pipes and their fittings is a more convenient and commonly used protection technology. The steel-plastic composite pipes after inner and outer protection are cost-effective. It is a combination of the excellent performance of steel pipe and plastic pipe, with the strength and rigidity of steel pipe, chemical corrosion resistance of plastic, smooth inner wall, no scaling, and small fluid resistance.
Long-distance water transmission anti-corrosion steel pipe technology is a long-term anti-corrosion treatment technology in my country at present. It combines steel and superior mechanical system performance and chemical corrosion resistance of polymer composite materials, prolongs the service life of steel pipes, and has certain advantages. It has unique advantages such as anti-corrosion, acid and alkali resistance, wear resistance, no scaling, auxiliary lubrication method, negative pressure resistance, etc. It can replace plastic-lined pipes, galvanized pipes, stainless steel pipes, copper pipes, etc.
The polymer anti-corrosion powder coating can be uniformly coated on the inner and outer surfaces of the metal pipe by using special equipment. The anti-corrosion steel pipe for long-distance water transportation can effectively prevent the secondary environmental pollution of water quality, and the effect of improving water quality management is obvious.
The use of plastic-coated steel pipes in developed countries has been relatively mature. For example, in the water pipes of the United States, Japan, and other countries, 80% to 90% of the pipes are plastic-coated steel pipes. The coated steel composite pipe meets the construction water supply and drainage requirements, fully conform to the CJ/T120-2008 and GB/T5750-2006 standards, and has been highly praised and affirmed by customers in recent years.