Enhanced 3PE anti-corrosion steel pipe manufacturer Guanghui Pipe Industry

Description :

　　3PE anti-corrosion steel pipe three-layer structure polyethylene anti-corrosion coating (3PE) combines the excellent properties of fusion bonded epoxy powder coating and extruded polyethylene anti-corrosion coating. It combines the interface characteristics and chemical resistance of fusion bonded epoxy powder coating with the mechanical protection characteristics of extruded polyethylene anti-corrosion coating, thereby significantly improving their respective performance. Therefore, as an external protective layer for buried pipelines, it is very superior. According to relevant information, three-layer PE can extend the service life of buried pipelines to 50 years. Currently, it is considered the most effective external anti-corrosion technology for pipelines internationally. In China, three-layer PE has been first applied in the oil and gas system. The Shaanxi Beijing natural gas pipeline and Kushan oil pipeline that have been built in China, as well as the nearly 4000 kilometers of West East Gas Pipeline, which is a national key project, have all adopted a three-layer PE external anti-corrosion coating. In Tianjin, the 67 kilometer high-pressure pipeline from Shaanxi to Tianjin, the 30 kilometer high-pressure natural gas pipeline from the outer ring line, and the 122 kilometer underground gas storage pipeline from Shaanxi to Beijing also use three-layer PE. It has become the development direction of external anti-corrosion coatings for pipelines in the future! At the same time, 3PE anti-corrosion steel pipes are divided into ordinary grade and reinforced grade, and their fundamental difference lies in the thickness. For common specifications 219-478, it is about 2.0mm, while reinforced grade is about 2.7mm. Their prices differ by about 7 yuan per square meter. The choice of anti-corrosion grade depends on the specific requirements of the customer. If it is used for ordinary casing external anti-corrosion, ordinary grade is more than sufficient. If it is used for direct fluid flow, such as acid and alkali, natural gas, etc., reinforced grade should be used as much as possible.

　　Enhanced 3PE anti-corrosion steel pipe, also known as three-layer PE anti-corrosion steel pipe, is an advanced anti-corrosion technology introduced from abroad in recent years. Its full name is fusion bonded epoxy/extruded polyethylene structural protective layer, which consists of the following three layers: the bottom layer is fusion bonded epoxy (≥ 80 μ m); The middle layer is adhesive (170-250 μ m); The surface layer is extruded polyethylene (about 2mm). The total thickness of the protective layer is about 1.8-3.7mm. In the three-layer structure, the main function of the fusion bonded epoxy powder coating is to form a continuous coating film, which is directly bonded to the surface of the steel pipe and has good chemical corrosion resistance and cathodic stripping resistance; Reacts with the active groups of the intermediate layer adhesive to form a chemical bond, ensuring that the overall anti-corrosion layer has good adhesion at higher temperatures. The intermediate layer is usually a copolymer adhesive, which is mainly composed of polyolefin. Currently, ethylene based copolymer adhesives are widely used. The polar functional groups of the copolymer adhesive can react with the epoxy groups of the fusion bonded epoxy powder coating to form hydrogen bonds or chemical bonds, forming a good bond between the intermediate layer and the bottom layer; The non-polar ethylene portion has a good affinity with the surface layer polyethylene, so the intermediate layer also has good bonding performance with the surface layer. The main function of polyethylene surface layer is to provide mechanical protection and anti-corrosion, which is the same as the traditional two-layer structure polyethylene anti-corrosion layer. E anti-corrosion steel pipe, 3PE anti-corrosion spiral steel pipe, reinforced 3PE anti-corrosion spiral steel pipe. The main equipment of Ruisheng, a 3PE anti-corrosion steel pipe manufacturer, includes steel pipe buffer platform, pipe shifting unit, traction machine, pipe threading machinery, high-pressure blasting machine, repair platform, transmission line, steel pipe preheating furnace, shot blasting machine host maintenance platform and diverging grid steel pipe return transmission line, fast in roller group, fast out roller, maintenance platform, etc. The bare tube undergoes shot blasting and rust removal through intermediate frequency heating. After rust removal inspection, it is heated again and sprayed at a certain temperature. First, powder coating is carried out, followed by adhesive coating, and finally, polyethylene coating is applied. Strictly conduct spray inspection. 3PE anti-corrosion steel pipe manufacturer's anti-corrosion production line processes and produces 3PE/2PE/FBE/2FBE/2PP/3PP anti-corrosion steel pipes, with product specifications ranging from ? 89mm to ? 1820mm, wall thickness from 6mm to 20mm, and an annual production capacity of 400000 tons. Only manufacturers of 3PE anti-corrosion steel pipes can produce 3PE anti-corrosion steel pipes and enhance their service life (usually 50 years).

　　The enhanced 3PE anti-corrosion steel pipe coating, also known as the three-layer polyethylene anti-corrosion coating, is a new anti-corrosion steel pipe coating that cleverly combines the European 2PE anti-corrosion layer with the widely used epoxy powder anti-corrosion steel pipe coating (FBE) in North America. It has been recognized and used worldwide for over ten years. The coating of 3PE anti-corrosion steel pipe is an epoxy powder anti-corrosion coating in contact with the bottom layer and the steel pipe surface, and a copolymer adhesive with branched functional groups in the middle layer. The surface layer is a high-density polyethylene anti-corrosion coating. The 3PE anti-corrosion coating combines the high impermeability and mechanical properties of epoxy resin and polyethylene materials. So far, it is globally recognized as an effective and high-performance pipeline anti-corrosion coating, which has been applied in many engineering projects. The reason for low water absorption is that the closed cell ratio of 3PE foam is up to 92%. Low thermal conductivity and low water absorption, combined with high-density polyethylene or fiberglass shell with good anti-corrosion layer and surface waterproofing function, have greatly improved the overall heat dissipation of the heating pipeline by rotating the environment of the rigid trench laying heating pipeline "wet cotton jacket". The heat loss of the heating network is 2%, which is less than the overseas standard of 10%. Three layer PE can extend the service life of buried pipelines to 50 years, and is currently considered the best external anti-corrosion technology for pipelines internationally.

　　April had a good start as scheduled, with a price increase of 20-50 yuan/ton on the basis of a general increase of 60-100 yuan/ton on Saturday. Although Shagang made up for a drop of 200 yuan/ton, its settlement is still higher than the market price, indicating the steel mill's intention to raise prices. And less than 24 hours have passed since the price increase, and today the market is starting to weaken significantly! The Shanghai building materials market has fallen by 60 yuan/ton, the Hangzhou market has fallen by 20 yuan/ton, and small and medium-sized enterprises in Tangshan have fallen by 40-50 yuan/ton. Mainly due to the significant increase in prices over the weekend, which hindered transactions. At the same time, a news release in the early hours of the morning stated that the trade confrontation between China and the United States will continue, and the severe situation will intensify. The weak market mentality has led to a decline in the futures market, with the more sensitive markets falling first. Analysis suggests that the current social inventory is gradually being digested, and in some areas, even due to the "dumping of goods" in March, some resources have experienced a shortage of specifications. The maintenance efforts of steel mills are also increasing, and the market supply pressure will be alleviated in the short term. In terms of demand, although terminal construction sites in East China have not yet fully started construction, the construction rate can still reach around 80%; The construction rate in the Beijing Tianjin Tangshan region has also reached 80%, and construction sites in the Handan area will begin to resume production gradually tomorrow; The infrastructure construction in Shandong region has basically started in full, but due to the tight funds for some real estate deposits, the construction site commencement rate is not ideal; The construction site commencement rate in Central China is also over 80%. Therefore, with the recovery of demand, social inventory will continue to decline, and the supply-demand contradiction in the market will be alleviated. If there is no major negative news, the construction steel market is expected to continue to rise after this round of minor adjustments. Although the pressure of supply-demand imbalance in the market will be alleviated to some extent in April, the demand for Silver IV has filled the market with hope, and the market price is expected to return to an upward trend. However, it is recommended that everyone still engage in rational operations and not close the market easily due to bullish trends. The market fluctuates rapidly, and it is suggested to focus on developing a long-term sales plan for April.

AfterSalesService :

• 3PE anti-corrosion steel pipe