TPEP anti-corrosion steel pipe recent price trend, domestic and foreign anti-corrosion steel pipe manufacturers Guanghui Pipe Industry

Description :

　　TPEP anti-corrosion spiral steel pipe is currently the anti-corrosion form for buried long-distance pipelines. The outer wall adopts a three-layer structure of anti-corrosion coating formed by hot melt bonding and winding technology, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, and the powder is uniformly coated on the surface of the pipe after high-temperature heating and fusion. External 3PE internal fusion bonded epoxy composite steel pipe (also known as TPEP anti-corrosion pipeline) is an upgraded product based on external polyethylene internal fusion bonded epoxy composite steel pipe, and is currently the anti-corrosion form for buried long-distance pipelines. It is a new type of anti-corrosion production line for large-diameter pipelines independently developed by Pipeline Co., Ltd. based on advanced anti-corrosion technology from abroad and the company's 30 years of anti-corrosion experience. The outer wall adopts a three-layer structure of hot-melt bonding and winding process, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene forming the anti-corrosion layer. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, and the powder is uniformly coated on the surface of the pipe after high-temperature heating and fusion.

　　Introduction to TPEP anti-corrosion steel pipe production process. 1. Compared with traditional electric furnace heating methods, medium frequency heating has a higher conversion rate and effectively saves electricity for steel pipes. By using medium frequency heating, the heat in the steel pipe is dissipated from the inside out, making the heating temperature more uniform and effectively ensuring the curing of the epoxy coating. 2. Single layer polyethylene adopts the technology of internal spraying and external spraying of epoxy powder and external spraying of polyethylene powder, which is called curtain method or coating process. It uses intermediate frequency heating to use the waste heat of the pipe to cure both at the same time, without the need for separate coating and curing. 3. The three-layer structure polyethylene adopts fusion bonding and winding technology, and the inner wall adopts thermal spraying epoxy powder anti-corrosion method. The powder is uniformly coated on the surface of the pipe body after high-temperature heating and fusion bonding. The outer coating is applied using high-pressure extrusion winding technology, greatly improving its density. The coating is tough, wear-resistant, and has excellent impact and bending resistance, which can effectively prevent mechanical damage during construction and damage to plant roots and soil environmental stress during use.

　　TPEP performance characteristics: The TPEP anti-corrosion process (inner EP and outer 3PE) for large-diameter water transmission pipelines combines thermosetting epoxy resin powder coating with polyethylene characteristics and processing technology. The three-layer structure polyethylene coating and fusion bonded epoxy powder coating technology are cleverly combined to provide a solution for corrosion protection of buried steel pipes. The inner wall fusion bonded epoxy resin powder (FBE) anti-corrosion solves the internal anti-corrosion problem of pipelines, with low roughness, smooth interior, and good hydraulic performance. Through the analysis of design examples, it is concluded that compared with pipes of the same diameter, the use of inner wall fusion bonded epoxy coating can reduce pipeline losses by more than 30%; Under the same flow rate, the pipe diameter can be reduced by one level, thereby reducing costs and energy consumption. It has become a mainstream product widely used in the market for large-diameter pipelines.

　　TPEP anti-corrosion spiral steel pipe for water transmission - external 3PE internal fusion bonded epoxy anti-corrosion steel pipe is an upgraded product based on the external single-layer polyethylene internal epoxy composite steel pipe, and is currently the anti-corrosion form of steel pipes for buried long-distance pipelines. It is the fourth generation new anti-corrosion production line for large-diameter pipelines independently developed by Cangzhou Chengyuan Pipe Industry Co., Ltd. The outer wall adopts a three-layer structure of anti-corrosion coating formed by hot melt bonding and winding technology, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, and the powder is uniformly coated on the surface of the pipe body after high-temperature heating and fusion, forming a steel plastic alloy layer, abbreviated as TPEP steel pipe, (T, the initial letter of three layers in English, PE refers to polyethylene, EP refers to epoxy resin).

　　TPEP anti-corrosion steel pipe - external 3PE internal fusion bonded epoxy anti-corrosion steel pipe is an upgraded product based on the external single-layer polyethylene internal epoxy composite steel pipe. (Sales hotline) is currently the anti-corrosion form of steel pipes for buried long-distance pipelines. It is the fourth generation large-diameter pipeline new anti-corrosion production line independently developed by Cangzhou Guanghui Pipeline. The outer wall adopts a three-layer structure of hot-melt bonding and winding process, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene forming the anti-corrosion layer. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, and the powder is uniformly coated on the surface of the pipe body after high-temperature heating and fusion, forming a steel plastic alloy layer, abbreviated as TPEP steel pipe (T, the first letter of three layers in English, PE refers to polyethylene, EP refers to epoxy resin). Greatly improved coating adhesion and thickness, enhanced resistance to bumps and corrosion. This product obtained a national utility model patent in 2009. Received the National Torch Project in 2010.

　　The composite process of TPEP steel plastic pipe base pipe and coating mainly involves preheating the base pipe to ensure that the surface temperature meets the temperature range required for plastic powder, and controlling the temperature before coating with plastic powder. Powder coating, also known as dispersion method, can be distinguished as spraying: using compressed air to spray plastic powder through a nozzle; Suction coating: Use a vacuum pump to create negative pressure inside the tube and suck in plastic powder; Immersion: Store plastic powder in a container and immerse the preheated base tube in the powder; Rolling molding: Plastic powder is stored on the wall of the base pipe, and the rotating rolling base pipe evenly distributes the powder. Due to the surface of the base pipe reaching a certain temperature, the plastic powder melts and coats the pipe wall, forming a coating and an anti-corrosion layer.

　　Production process: The inner wall of the product adopts thermal spraying epoxy powder anti-corrosion method. The powder is uniformly wrapped and coated on the surface of the pipe body after being heated and melted at medium frequency and high temperature, forming an inner wall anti-corrosion layer that meets the requirements of food grade anti-corrosion. The outer wall of the product is treated with 3PE anti-corrosion treatment, with a layer of epoxy powder; A layer of adhesive; A three-layer anti-corrosion structure with one layer of polyethylene. On the basis of the 3PE anti-corrosion form developed by the outer wall anti-corrosion technology, the current anti-corrosion treatment is also applied to the inner wall anti-corrosion, achieving the anti-corrosion effect of both the outer and inner walls and protecting the main body of the steel pipe. This form of anti-corrosion treatment is currently the most advanced overall anti-corrosion treatment technology for steel pipes in China and even internationally. It is also the preferred anti-corrosion treatment for high demand engineering projects both domestically and internationally. The product is suitable for pipeline transportation engineering under various conditions, which is a revolution for traditional pipeline products and a choice to replace traditional products such as steel cylinder concrete pipes, ductile iron pipes, PE pipes, etc.

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