Quotation from manufacturer of buried 3pe anti-corrosion steel pipe

Description :

　　The anti-corrosion coating of 3pe anti-corrosion steel pipes is particularly important for the service life of buried pipelines. For pipelines made of the same material, some are buried underground for decades without corrosion, while others may leak within two years. It is because they have chosen different external anti-corrosion coatings. Polyethylene three-layer construction safety protection layer, also known as three-layer PE (3PE), is an excellent anti-corrosion technology introduced from overseas in recent years. Its full name is fusion bonded epoxy resin/flame-retardant plastic polyethylene construction safety protection layer, which is composed of the following three layers: its full name is fusion bonded epoxy resin/flame-retardant plastic polyethylene construction safety protection layer, which is composed of the following three layers: the bottom layer is fusion bonded epoxy resin (≥ 80 μ m); The inner layer is adhesive (170 to 250 μ m); The overall surface layer is made of flame-retardant plastic polyethylene (about 3mm). The total thickness of the safety protection layer is about 1.8-3.7mm. In the three-layer structure, the key function of the fusion bonded epoxy powder coating is to produce a continuous coating that immediately adheres to the surface of the seamless steel pipe, and has excellent resistance to solvent corrosion and negative electrode detachment; The specific functional groups of the inner layer adhesive reflect to produce organic chemical bonding, ensuring that the overall anti-corrosion layer has excellent adhesion at higher temperatures.

　　The key method for manufacturers of buried 3PE anti-corrosion steel pipes to reduce prices is to minimize the consumption of anti-corrosion raw materials and ensure that the remaining anti-corrosion raw materials are used for the next application as much as possible. Another option is to search for manufacturers of seamless steel pipes with low prices, as cost-effective and high-quality seamless steel pipes can also reduce costs. These two factors give our product pricing a certain level of competitiveness. The 3PE anti-corrosion coating combines the high impermeability level and high physical properties of epoxy resin adhesive and polyethylene raw materials. So far, it has been widely recognized as a pipeline anti-corrosion coating with practical effects and characteristics, and has been applied in numerous engineering projects.

　　The three-layer polyethylene anti-corrosion coating (3PE) integrates the characteristics of fusion bonded epoxy powder coating and extruded polyethylene anti-corrosion coating. It combines the page characteristics and solvent resistance of fusion bonded epoxy powder coating with the mechanical equipment maintenance characteristics of extruded polyethylene anti-corrosion coating, thereby significantly improving their respective characteristics. Therefore, as an external safety protection layer for buried pipelines, it is very excellent. According to relevant materials, three-layer PE can extend the service life of buried pipelines to 50 years. ⑶ The anti-corrosion of fixed and immovable joints should be carried out after welding and water pressure testing meet the standards. First, remove and clean the overlapping surface of the anti-corrosion layer on both sides of the fixed mouth. Further carry out anti-corrosion solutions.

　　After being subjected to the rust prevention treatment process by senior experts, the rust prevention treatment of seamless steel pipes has reached the Sa2 level in the standard, and the outer precision has reached the standard R=12.5 μ m. The second layer of pipeline anti-corrosion: 3PE anti-corrosion layer is made by introducing hard 3PE plastic foam source liquid into the inner cavity of seamless steel pipe generated in the middle of the outer protective layer by the bottom pressure high-pressure foaming machine. Also known as the "pipe inside pipe foaming process". Its seven senses are moisture-proof, anti-corrosion, and supporting the weight of the heating pipe network itself. When the temperature of the transported material is -50 ℃ -120 ℃, the rigid polyurea ester plastic foam is used as the anti-corrosion coating. Upgrade the anti-corrosion coating 2PE and 3PE of the pipeline to a digital spark discharge coating leak detector, and a specialized spark discharge coating needle hole leak detector for fiberglass anti-corrosion. 3PE anti-corrosion steel pipes are mainly made of polyethylene and high-density polyethylene according to national industry standards and key standards. The Vicat softening point is listed as not less than 110 ℃; The thickness of the external anti-corrosion layer is determined according to the German standard dominated by low and molar mass formula polyethylene. Greatly improved the impact and compressive strength of 2PE anti-corrosion coating.

　　One of the most common ways for manufacturers of buried 3PE anti-corrosion steel pipes is to isolate them from various corrosive substances. The three-layer construction of PE anti-corrosion steel pipe with polyethylene anti-corrosion layer (PE) has sorted out the excellent qualities of fusion bonded epoxy powder coating and kneaded polyethylene anti-corrosion layer. It combines the page characteristics and solvent resistance of fusion bonded epoxy powder coating with the special rights of mechanical equipment maintenance for kneaded polyethylene anti-corrosion layer, and subsequently significantly improves their respective functions. Therefore, as an external safety protection layer for buried pipelines, it is very excellent. According to the detailed introduction of relevant raw materials, three-layer PE can extend the service life of buried pipelines to 0 years. Nowadays, it is considered as the most advanced external anti-corrosion technology for pipelines. Pipelines made of the same raw materials can be buried underground for decades without corrosion, while others can occur within two years. It is because they have adopted different external anti-corrosion coatings.

　　The polyethylene three-layer construction safety protection layer of 3PE anti-corrosion steel pipes, also known as three-layer PE (PE), is a corrosion protection technology introduced in recent years. PE anti-corrosion steel pipes have excellent soil resistance to the requirements of anti-corrosion coatings. The key function of the fusion bonded epoxy powder coating in the three-layer structure is to produce a continuous coating that immediately adheres to the surface of the seamless steel pipe, possessing excellent solvent corrosion resistance and resistance to negative electrode detachment; The indicators of tensile strength and impact resistance of the 3PE anti-corrosion layer have been significantly increased, and it has been explicitly stipulated that according to some specialized carbon black components, the impact toughness and aging resistance of the 3PE anti-corrosion layer have been ensured. The number of sampling tests for repairing tensile strength (i.e. the tensile strength of the opposite painted steel of the heat shrink sleeve and heat shrink band) has also been increased. 3PE anti-corrosion steel pipes can be used for multi-layer building water supply and drainage, heating pipe network heating, drinking water engineering projects, natural gas transportation, buried water supply and other pipelines. Processing pipelines for transporting corrosive substances in manufacturing industries such as crude oil transportation pipelines, chemical plants, and printing and dyeing plants. Wastewater treatment sewage pipe, sewage pipe and its microbial pond anti-corrosion engineering project. The main uses of 3PE anti-corrosion steel pipes, such as irrigation pipes for farmland, deep water well pipes, and drainage pipelines, can be said to be indispensable in today's basic construction. We firmly believe that with the expansion of high-tech, they will have even more brilliant exam results in the future. 3PE anti-corrosion advantages: PE anti-corrosion pipelines have very high airtightness, and long-term operation can greatly save resources, reduce costs, and protect the ecological environment. Strong anti-corrosion working ability, simple and efficient construction unit, with a service life of 30-50 years.

　　3PE anti-corrosion steel pipes are applied in different office environments. To alleviate or avoid corrosion and mold caused by the chemical and photocatalytic effects of substances outside the pipeline or the metabolic activity of microbial strains, 2 or 3 layers of polyethylene (3PE) are coated on the outer wall to achieve pipeline anti-corrosion. The service life of 3PE anti-corrosion pipes is increased by 3-5 times. The bottom layer is made of fusion bonded epoxy resin (≥ 80 μ m); The inner layer is adhesive (170-250 μ m); The overall surface layer is made of flame-retardant plastic polyethylene (about 3mm). The total thickness of the safety protection layer is about 1.8-3.7mm. In the three-layer structure, the key function of the fusion bonded epoxy powder coating is to produce a continuous coating that immediately adheres to the surface of the seamless steel pipe, and has excellent resistance to solvent corrosion and negative electrode detachment; The specific functional groups of the inner layer adhesive reflect to produce organic chemical bonding, ensuring that the overall anti-corrosion layer has excellent adhesion at higher temperatures. The inner layer is generally made of polymer adhesive, which is mainly composed of polyolefin. Currently, methyl methacrylate polymer adhesive is commonly used. The scientific research results, as part of the new version of the standard specification SY/T0413 and related pipeline engineering product standards, have achieved excellent social development and economic benefits in recent years' specific applications.

　　In addition, it has high compressive strength of epoxy resin, low water absorption capacity of PE, and good flexibility of hot-melt adhesive, making it highly reliable for corrosion prevention. The defect is that compared with the cost of other repair materials, the cost is high. The use of 3PE anti-corrosion steel pipe with single-sided epoxy powder ensures the actual anti-corrosion effect of the anti-corrosion steel pipe from the source. Then, the next process is carried out: the three-layer adhesive is used to construct a polyethylene anti-corrosion layer (3PE), which comprehensively combines the characteristics of fusion bonded epoxy powder coating and extruded polyethylene anti-corrosion layer. The page characteristics and solvent resistance characteristics of fusion bonded epoxy powder coating are integrated with the mechanical equipment maintenance characteristics of extruded polyethylene anti-corrosion layer, thereby significantly improving their respective characteristics. Therefore, as an external safety protection layer for buried pipelines, it is very excellent. According to relevant materials, three-layer PE can extend the service life of buried pipelines to 50 years. At present, it is considered a outstanding external anti-corrosion technology for pipelines internationally. In China, three-layer PE has been first applied in petrochemical system software. The Shaanxi Beijing natural gas pipeline and the Kushan oil pipeline, which have been completed in China, have recently adopted a three-layer PE external anti-corrosion coating for nearly 4000 kilometers of key engineering projects such as the West East Gas Pipeline.

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