Buried 3pe anti-corrosion seamless steel pipe physical manufacturer spot sales

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　　3PE anti-corrosion seamless steel pipe manufacturer anti-corrosion steel pipe three-layer structure polyethylene anti-corrosion coating (3PE) combines the excellent properties of epoxy coating and extruded polyethylene anti-corrosion coating, combining the interface characteristics and chemical resistance of epoxy 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 and is currently considered the most advanced pipeline external anti-corrosion technology internationally. The anti-corrosion of 3PE anti-corrosion steel pipes conforms to the principles of "good anti-corrosion effect", "no pollution", "no solvents", "energy saving" and "good economy". The structural principle is: the bottom layer is fusion bonded epoxy, the middle layer is adhesive, and the surface layer is extruded polyethylene. Its characteristics are high strength, corrosion resistance, acid resistance, alkali resistance, salt resistance, and long service life. According to the actual situation in China, polyethylene and high-density polyethylene are the main types, and the Vicat softening point is set at not less than 110 ℃; The thickness of the external anti-corrosion layer is determined according to the German standard DIN30670 bar 1991, which mainly uses low and medium density polyethylene. The earth has improved the impact resistance strength of the 3PE anti-corrosion layer, ensuring the construction quality of the Shaanxi Beijing pipeline and the Kushan pipeline. SY/T0413-2002 has significantly increased the peeling strength and impact resistance indicators of the 3PE anti-corrosion layer, and clearly stipulated that according to the carbon black content of some special materials, the mechanical strength and weather resistance of the 3PE anti-corrosion layer are guaranteed, and the sampling frequency of joint peeling strength (i.e. the peeling strength of heat shrink sleeves and heat shrink tapes to primer steel) has been increased. How to develop anti-corrosion steel pipes in China in the future? Anti corrosion steel pipes include original asphalt paint anti-corrosion steel pipes and epoxy paint anti-corrosion steel pipes. In recent years, due to the development needs of the market and the continuous improvement of engineering products, anti-corrosion steel pipe products have also been launched with 3PE anti-corrosion. Steel pipe, cold wrapped anti-corrosion steel pipe.

　　3PE anti-corrosion seamless steel pipe manufacturer refers to the temperature preservation and anti-corrosion measures that ensure the temperature inside and on the surface of the working steel pipe in different working environments, in order to slow down or prevent corrosion and deterioration under the chemical and electrochemical effects of external media or metabolic activities of microorganisms. The general method of anti-corrosion is to densely apply coatings on the surface of rust removed metal pipelines to isolate them from various corrosive media. This is also one of the basic methods for anti-corrosion of steel pipes. The outer wall anti-corrosion coating, the type and usage conditions of the outer wall coating material of the pipeline, the inner wall anti-corrosion coating is a thin film applied to the inner wall of the pipeline to prevent corrosion inside the pipeline, reduce friction resistance and increase transmission capacity. The anti-corrosion insulation coating is applied on the main pipeline of medium and small caliber hot oil or fuel transportation. In order to reduce the heat dissipation of the pipeline to the soil, a composite layer of insulation and anti-corrosion is added on the outside of the pipeline. If the outer protective tube is made of polyethylene, there is no need to miss out on anti-corrosion measures. Because polyethylene has excellent low temperature resistance, good chemical stability, and can withstand most acid-base erosion, it is insoluble in general solvents at room temperature and has low water absorption. 3PE anti-corrosion seamless steel pipe, 3PE polyethylene anti-corrosion seamless steel pipe, Guanghui Pipeline sincerely invites you to come to Cangzhou for on-site inspection. The purpose of 3PE anti-corrosion steel pipe is really wide coverage. It is suitable for underground water supply and drainage, underground spraying, positive and negative pressure ventilation, gas drainage, fire sprinkler and other pipe networks in coal mines. Waste water and return water pipelines for thermal power plants. The applicability of water supply pipelines for anti spray and sprinkler systems. Cable protection sleeves for power, communication, highways, etc. Suitable for high-rise building water supply, heating network, water supply engineering, gas transmission, buried water transmission and other pipelines. Pipelines used for transporting corrosive media in industries such as petroleum transportation, chemical engineering, and printing and dyeing. Anti corrosion engineering for sewage treatment discharge pipes, sewage pipes, and biological tanks. For agricultural irrigation pipes, deep well pipes, drainage pipes and other network applications, it can be said that 3PE anti-corrosion steel pipes are essential in current construction, and we believe that with the extension of technology, they will have even more brilliant achievements in the future.

　　The national standard 3PE anti-corrosion welded pipe is used in different working environments. In order to slow down or prevent the corrosion and deterioration of the pipeline under the chemical and electrochemical action of the external medium or the metabolic activity of microorganisms, 2 or 3 layers of polyethylene (3PE) are coated on its outer wall to achieve pipeline anti-corrosion. The service life of 3PE anti-corrosion pipes is extended by 3-5 times. 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.

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