Double resistant coated anti-corrosion steel pipe

The price of one linear meter of inner and outer coated composite steel pipes is constantly improved by the company's technological transformation of production processes and testing equipment, strengthening the control of product quality. Guided by the business philosophy that product quality is the life of the enterprise, the company is equipped with various scientific and important testing facilities, such as in line ultrasonic automatic flaw detectors, X-ray industrial televisions, X-ray real-time imaging systems, 2000 ton hydrostatic pressure testing machines, material testing machines, Charpy impact testing machines, carbon sulfur analyzers, and other key and important testing equipment

The price of one linear meter for inner and outer coated composite steel pipes is constantly improved by the company's technological transformation of production processes and testing equipment, strengthening the control of product quality. Guided by the business philosophy of "product quality is the life of the enterprise", the company is equipped with various scientific and important testing facilities, such as online ultrasonic automatic flaw detectors, X-ray industrial televisions, X-ray real-time imaging systems, 2000 ton hydrostatic pressure testing machines, material testing machines, Charpy impact testing machines, carbon sulfur analyzers, and other key and important testing equipment. These precision production and testing equipment ensure product quality from a hardware perspective, ensuring that product quality meets standards. The person in charge of a steel mill in the Yangtze River Basin told reporters that since late September, the rapid rise in mineral prices has replaced steel prices as the market focus. The price of 62% grade iron ore has recently broken through the $80/ton mark several times. Guangfa analyst Li Sha believes that the essence of supply side structural reform lies in "reducing quantity and improving quality". On the premise of no significant decline in demand, the withdrawal of production capacity and the contraction of the supply side. Introduction: September was originally the peak season of "golden September and silver October", but it is already late September. From the trend of the domestic steel market, it continues to rise and support. Currently, China's steel savings The volume has reached about 7 billion tons, but in terms of per capita savings, when it comes to deepening cooperation in the steel industry, The Plan points out that the steel industry is one of China's competitive advantage industries,

Chemical properties of internally and externally coated composite steel pipes. It has a relatively stable network structure in high-temperature environments, and for this structure, it will not easily undergo chemical reactions with other materials. In addition, its corrosion resistance plays a crucial role in fields such as petroleum and construction engineering. The method of producing composite steel pipes with internal and external coating requires sandblasting and rust removal treatment for the steel pipes, which has a large purification and complex process. At room temperature, plastic coated (elastic) steel pipes adopt metal anti-corrosion mid edge technology, with rust proof coating as the top coating. Rust resistant coatings need to meet special performance requirements: rust resistant, weak adhesion, * * *, sprayable, good anti-corrosion performance, etc. In addition, the conventional method of coating inner and outer plastic composite steel pipes is to achieve good adhesion of the coating to the inner wall of the steel pipe by low-temperature burning of the steel pipe and spraying with electric powder. Therefore, when selecting internal spraying materials, it is necessary to consider: strong adhesion, * * *, wear resistance, impact resistance, resistance to various chemical corrosion, and room temperature sprayability. The anti-corrosion protection of composite steel pipes coated with plastic at room temperature can be used in complex environments such as acid, alkali, salt, fresh water, and petrochemicals. The coating can withstand temperatures up to 180 ℃ with minimal volume deformation at low temperatures, and its wear resistance is also extremely weak. Therefore, it can also be used to ensure the delivery of fluid materials with high dew and solid content. Internally and externally coated composite steel pipes are divided into polyethylene coated steel pipes and epoxy resin coated steel pipes according to the different internal coating materials. The product marking consists of the code for the coated composite steel pipe, the code for the inner coating material, and the nominal size. Water supply lined plastic composite steel pipe is made by lining the inner wall of the steel pipe with thermoplastic pipes such as polyethylene (PE), heat-resistant polyethylene (PE-RT), cross-linked polyethylene (PE-X), polypropylene (PP-R), rigid polyvinyl chloride (PVC-U), chlorinated polyvinyl chloride (PVC-C), etc. according to the requirements of the conveying medium. Due to technological improvements, some products have added an outer plastic layer. The product is divided into plastic lined steel pipes for cold water and plastic lined steel pipes for hot water according to the temperature of the transported water. The product label consists of the code for the lined plastic steel pipe, the code for the lined plastic material, and the nominal diameter. Consumers should try to choose reputable products from large shopping malls and stores according to their actual needs when purchasing such products. In recent years, the development of inner and outer plastic coated composite steel pipes has been getting better and better due to their performance. In our daily lives, we can see that they are mainly used in gas, residential drainage, and water transportation. Inner and outer plastic coated composite steel pipes have characteristics that ordinary steel pipes do not have, mainly including corrosion resistance, wear resistance, etc. Its service life and various excellent properties are more outstanding than ordinary steel pipes.

Coated steel pipes continue the advantages of steel pipes, with high mechanical strength and strong resistance to external influences such as impact bending It has strong chemical corrosion resistance and is suitable for transporting fluids containing sulfur, calcium, magnesium, and other corrosive media underground in coal mines. This pipeline can be equipped with various fittings such as flange coating, tees, elbows, etc., all of which have undergone internal and external plastic coating anti-corrosion treatment to ensure the overall anti-corrosion effect of the pipeline. The usage right and service life can be several times longer than ordinary steel pipes. The substrate adopts the physical Shenzhen Special Zone processing technology, and the pre-treatment meets the SA 2.5 standard. The scientific and reasonable process and equipment ensure the quality of the coating, and its adhesion is significantly higher than the * * * standard. The coating on the inner and outer pipe surfaces is dense, without scaling, and the wear resistance coefficient and roughness are lower than ordinary steel pipes, making it an economical, environmentally friendly, and cost-effective product. Using a specially designed thermoplastic polyethylene powder coating, its anti-static and flame-retardant components are evenly distributed on the surface and inner layer of the pipe, meeting the requirements of MT181 and suitable for use in flammable and explosive locations underground in mines. The product can be connected using quick couplings, flanges, and other methods, with easy installation and reliable performance. Adopting a composite structure with both internal and external plastic coating protective layers, and reinforced welded steel pipes or seamless pressure bearing steel pipes in the middle, it overcomes the defects of easy rusting, corrosion, high pollution, low strength, and easy deformation of plastic pipes, and integrates the common advantages of steel pipes and plastic products. It is an environmentally friendly product promoted and used by * *. Coated composite steel pipe is a steel plastic composite pipe made by dissolving a layer of organic compounds such as polyethylene (PE) resin, ethylene acrylic acid copolymer (EAA), epoxy (EP) powder, * * polypropylene (PP) or * * polyvinyl chloride (PVC) with a thickness of 0.5-1.0mm on the inner wall of the steel pipe. It not only has the advantages of high strength, easy connection, and water flow resistance of steel pipes, but also overcomes the disadvantages of steel pipes being prone to corrosion, pollution, scaling, low strength of plastic pipes, and poor fire performance when exposed to water. Its design life can reach 50 years. The main disadvantage is that bending is not allowed during installation, and the cutting surface should be coated with the * * * room temperature curing adhesive provided by the manufacturer during hot processing and electric welding cutting operations.