National standard TPEP anti-corrosion steel pipe price Cangzhou Guanghui Pipe Industry steel pipe manufacturer production processing customization

Description :

　　Inner oxygen outer polyethylene anti-corrosion steel pipe is a generation of anti-corrosion forms applied to long-distance water transmission pipelines. Compared with traditional transmission pipelines, it has many advantages and features. The external anti-corrosion of the pipeline is 3PE, and the internal anti-corrosion of the pipeline is fused epoxy powder. The anti-corrosion standard of the inner wall of the pipeline has reached food grade The TPEP anti-corrosion steel pipe project can be buried and used for 50 years according to the standard construction to ensure the normal use of the pipeline The composite process of TPEP anti-corrosion 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 then coating it with plastic powder. Powder coating, also known as dispersion method, can be divided into: 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.

　　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 an advanced anti-corrosion form for buried long-distance pipelines. The independently developed fourth generation large-diameter pipeline new anti-corrosion production line adopts a three-layer structure of anti-corrosion coating formed by hot melt bonding and winding process on the outer wall, including bottom layer epoxy resin, middle layer adhesive, and outer layer polyethylene. The inner wall adopts thermal spray epoxy powder anti-corrosion method, and the powder is uniformly coated on the surface of the pipe body after high temperature and hot melt bonding. TPEP composite steel pipeline: Its Chinese name is, outer wrapped polyethylene and inner fusion bonded epoxy anti-corrosion steel pipe, which is the fourth generation of long-distance water pipeline anti-corrosion technology, as indicated by its full Chinese name. The outer wall of the pipeline adopts 3-layer PE structure anti-corrosion technology wrapped with polyethylene, and the inner wall adopts hot-melt epoxy anti-corrosion treatment. Use standards to meet food grade standards. It is a truly high-quality anti-corrosion pipeline for transportation.

　　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.

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