> Price of anti-corrosion seamless steel pipes for water drainage: Polyethylene and epoxy resin have excellent corrosion resistance, but each has its own merits. Polyethylene is a thermoplastic material with good flexibility and resistance to bumps. Since it is a non-polar molecule, its adhesion to steel pipes is poor. Epoxy resin is a polar molecule with groups that easily reacts with steel pipes at a certain temperature and has extremely strong adhesion. However, because it is a thermosetting substance, it is not resistant to collisions. Therefore, the combination of the two materials is currently the best combination in the anti-corrosion industry. The plastic-coated steel pipe industry first used internal and external polyethylene. Due to poor adhesion between polyethylene and the steel pipe matrix, it later developed to internal and external epoxy. However, the outer epoxy layer was not resistant to bumps, and later developed to the third generation of internal epoxy and external polyethylene. , but there is still an adhesion problem when a single layer of polyethylene is directly combined with a steel pipe. It was finally upgraded to the current fourth-generation anti-corrosion inner hot-melt epoxy outer three-layer polyethylene structure, referred to as anti-corrosion steel pipe. Cangzhou Chengyuan Pipeline Co., Ltd., based on its anti-corrosion experience, introduced Russian and Japanese production technology to realize the fourth generation upgraded product of plastic-coated composite steel pipe for water supply. (The initials of three-layer English refer to polyethylene and epoxy resin). Won the national patent in 2018, won the national torch project in 2018, won the key new product in 2018, and was awarded the second prize of the Science and Technology Progress Award by the Chinese Corrosion and Protection Society in the same year. This product filled the domestic large-diameter buried water pipes' internal and external anti-corrosion disposable film Whitespace.
The water supply pipe network is the lifeline of urban operation. Pipe bursts, water outages, and low pressure will threaten the safety of water supply. Ensuring the safety and hygiene of transported water quality is very important for pipelines. The transportation of water from water plants through poor pipelines will seriously threaten water quality. Therefore, the state requires water supply companies to continuously ensure that tap water leaving the factory passes through pipes safely, effectively and reliably. network delivered to each user.
Steel pipes have superior ductility, integrity and convenient construction operability. They are suitable for underground laying and can be used for overhead construction, river crossing and pipe jacking construction. Steel pipes and their accessories are shielded with anti-corrosion coatings on their inner and outer wall surfaces. This is the most convenient and commonly used means of protection. The steel-plastic composite pipe after internal and external protection is very cost-effective. It is a combination of the excellent properties of steel pipes and plastic pipes. It not only has the strength and stiffness of steel pipes, but also has the chemical corrosion resistance, no pollution, smooth inner wall, and no fouling of plastics. , small fluid resistance and other advantages, it can effectively prevent secondary pollution of water quality, and has a significant effect on improving water quality. Developed countries such as the United States and Japan have been using it for more than 10 years.
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Price of TPEP anti-corrosion seamless steel pipe for water drainage