The design service life of the current pipeline is basically more than 30 years, and the number of maintenance should be reduced to ensure normal use. Therefore, the selection and application of anti-corrosion plastic-coated steel pipe materials should be highly valued by pipeline builders and designers. With the development of science and technology, the application of anti-corrosion materials will have the following development trends: large-diameter plastic-coated steel pipes are generally used in municipal and major buildings for water supply and drainage. Thermosetting powder coatings for applying high adhesion, anti-corrosion thermoplastic powder coatings. The coating has strong adhesion, excellent impact resistance and strong resistance to cathodic disbonding. Product advantages of fire-fighting internal and external plastic-coated steel pipes: excellent chemical corrosion resistance, water resistance and solvent resistance, protein resistance, high-expansion foam fire extinguishing agent corrosion, can maintain the stability of fire pipelines and continuous water supply in case of fire; high coating Adhesion, anti-corrosion, thermosetting powder. A plastic layer is coated on its inner surface, so that it has the advantages of steel pipe and plastic pipe at the same time, so that it can maintain stable performance for a long time under harsh fire pipeline conditions. Spray coating process: also known as the curtain method, the sieve filled with powder is coated on the outer wall of the heated steel pipe by the method of spray coating. The wood composite floor with flame retardant function must meet the B1 level flame retardant standard and the smoke toxicity level standard. Fire-proof floor Fire-proof floor should first be based on fiberboard, particleboard, plywood, etc., with coating or impregnated paper as the finishing material, and through flame-retardant treatment, to achieve a certain flame-retardant grade. The staff of the relevant pipes of the plastic-coated steel pipe manufacturers also told us such things. First of all, the use of water supply pipes is commonly used in our lives. The pipes supplied to our daily drinking water must be environmentally friendly. materials. The staff of the relevant pipes of the plastic-coated steel pipe manufacturers told us that this is mainly because with the continuous development of our modern technology and the continuous improvement of living standards, each of our social groups has a higher demand for a green life. Such urgent needs are mainly Because our current river pollution has been in a very serious development state, and our atmosphere is constantly being destroyed, and various pollution particles in the air that are harmful to our human health are polluting us. We can only ensure that we live in a green city if we do it well in all aspects. Fire-fighting internal and external plastic-coated steel pipes are based on steel pipes, and plastic powders such as epoxy resin and flame retardant are used as coating materials. Material ready for cutting, centering, heat switching, fusion, butt, cooling, butt completion.