Lined polyurethane steel pipe is a high-performance pipe material, with excellent wear resistance, corrosion resistance, high temperature resistance and other properties, suitable for various occasions that require wear resistance, corrosion resistance and high temperature resistance.
The manufacturing process of lined polyurethane steel pipe mainly includes several steps, such as the pretreatment of steel pipe, the preparation and processing of polyurethane lining, and the composite of lining and steel pipe. Among them, the pretreatment of steel pipes includes rust removal, degreasing, drying, etc., to ensure the close combination of polyurethane lining and steel pipes. The preparation and processing of polyurethane lining is to mix polyurethane prepolymer with an appropriate amount of fillers, pigments, additives, etc., and then heat or cool to solidify to form a lining, and then install it inside the steel pipe. The composite of the lining and the steel pipe is to closely combine the lining and the steel pipe by heating, pressurization, etc., to form a high-performance lined polyurethane steel pipe.
The application range of polyurethane lined steel pipe is very wide, which can be used to transport solid granular materials such as coal, ore, sand, etc., and can also be used to transport corrosive media such as acid, alkali and salt, as well as high-temperature gas, liquid and other media. Due to its excellent wear-resistant, corrosion-resistant, and high-temperature resistance, polyurethane steel pipes lined with polyurethane have been widely used in electric power, coal, chemical industry, mining, metallurgy and other fields.
What are the features and benefits of lined polyurethane steel pipes?
1. Abrasion resistance: the lined polyurethane has good elasticity and can withstand the direct erosion and abrasion of the medium on the inner wall of the pipeline, thus greatly reducing the wear of the medium on the pipeline. Its wear life is dozens of times that of ordinary steel pipes.
2. Anti-scaling: The surface of polyurethane is smooth and non-polar, and it is non-wetting to the outside, which can prevent the adhesion of the scale layer and has outstanding anti-scaling.
3. Anti-corrosion: Polyurethane has the corrosion resistance of acid, alkali, salt and seawater, and can be used in a variety of corrosive environments.
4. Good low temperature resistance: it can be applied in the medium temperature range of -50 +100.
Light weight and easy installation: Because the base pipe is thin-walled pipe, the weight is relatively light, and the connection method is usually flanged during installation, which is easy to install.
5. The total cost of the project is low: due to the advantages of light weight, long service life and low maintenance cost, the total cost of the lined polyurethane steel pipe is relatively low.
6. Various connection methods: the lined polyurethane steel pipe can be connected in a variety of ways, such as welding, flange connection, socket connection, quick connector connection, etc.
7. Wide range of applications: suitable for conveying grinding granular materials and corrosive media such as pulverized coal, ash, mineral powder, molten aluminum, mud and other fields in electric power, coal, chemical industry, mining, metallurgy and other fields.