What is anti-corrosion steel pipe?
Anti-corrosion steel pipe is a steel pipe processed with anti-corrosion technology. It can prevent or slow down chemical or electrochemical reactions during transportation and use. Due to its particularity, anti-corrosion steel pipes are widely used in long-distance water transportation, petroleum, chemical, natural gas, Thermal power, sewage treatment, water sources, bridges, steel structures, ship water transport, piling and other pipeline engineering fields.
What are the advantages of anti-corrosion steel pipes?
It combines the mechanical strength of steel pipes and the corrosion resistance of plastics. The exterior wall paint is larger than 2.5mm, resistant to scratches and collisions, and the inner wall friction coefficient is small, which can reduce energy consumption. The inner wall meets the national health standards. The inner wall is smooth and not easy to scale. The curing agent has a self-cleaning function, and the viscosity of solvent-free epoxy coatings is low.
Analysis of anticorrosive steel pipe coating materials
There are generally three types of anti-corrosion materials for steel pipes. Solvent-free epoxy coating is one of them. The cured coating has corrosion resistance, hardness and compactness. It has a relatively suitable service life and curing time, in addition to good insulation. In addition to chemical stability, great progress has also been made in adhesion, impact resistance and peel strength. No solvent evaporation during the construction process, the film formation degree can reach more than 200 times, and there is no shortage of pinholes. In order to save energy and protect Environment, please use 3pe anti-corrosion steel pipe.
The characteristics of cold tie and E-type heat shrinkable tape are: anti-corrosion steel pipes are suitable for various materials, and other methods are suitable for main anti-corrosion steel pipes of the same or similar materials. Our country has petroleum asphalt, polyethylene jacket, polyethylene foam jacket, and epoxy. Multiple steel pipes such as coal tar pitch, coal tar pitch enamel, epoxy powder and three-layer composite structure. At present, the widely used pipeline anti-corrosion methods include three-layer PE composite structure and single-layer powder epoxy resin, as well as 3PE cold-wound anti-corrosion steel pipe and 3PE anti-corrosion steel pipe.
Cold rolled tape has the characteristics of anti-corrosion, simple operation, good waterproof performance, low strength, and great impact on the environment. The epoxy powder anti-corrosion adopts electrostatic spraying method, and it is welded with the pipe body of the same material. It has strong anti-corrosion ability and strong adhesion. Oxygen powder has poor water resistance and high water absorption rate of up to 0.83%. Epoxy powder preservatives should not be used in water pipeline construction, because in addition to poor water resistance, on-site construction quality is also high and difficult to control.
Note:ASTM A500-Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.According to ASTM A500, the weld seam location for square, rectangle and other specially shaped tubing shall not be located within the corner radius, unless specified by the customer or manufacturer.Under ASTM A500, the corner radius for square and rectangular tubing shall not exceed three times the corner radius.