Due to its non-toxic, non-rusting, odorless properties, and its ability to prevent secondary water pollution, not requiring anti-corrosion treatment, and significantly extending service life, as well as easy installation, the internally and externally hot-dipped galvanized steel pipe has found widespread application in municipal and urban distribution networks. Consequently, it has been warmly welcomed by the water supply and drainage industry. In terms of service life, rigidity, impact resistance, corrosion resistance, and anti-rust scaling, the internally and externally hot-dipped galvanized steel pipe outperforms other pipes like plastic-lined, rubber-lined, and hot-dipped galvanized pipes.

Hot-dip galvanized steel pipes inherit the advantages of steel pipes, featuring high mechanical strength and excellent resistance to impacts and bending. They possess strong chemical corrosion resistance, making them suitable for transporting sulfur-containing calcium magnesium fluids and other corrosive media in coal mine shafts. The pipes are available with flanges, tees, elbows, and other fittings, all of which are coated with anti-corrosion materials on both the inside and outside to ensure the overall corrosion resistance of the pipeline, extending the service life several times compared to ordinary steel pipes. The base material of the inner and outer hot-dip galvanized steel pipes undergoes a special physical treatment process, reaching the SA 2.5 standard for pretreatment. The scientific and reasonable process, along with advanced equipment, guarantees the quality of the coating, with a higher adhesion than the standard. The inner and outer pipe surface coatings are dense, non-scaling, with lower friction coefficients and roughness numbers than ordinary steel pipes, making them economically and environmentally friendly with a high cost-performance ratio. The pipes are coated with a special thermoplastic polyethylene powder coating, which has anti-static and flame-retardant components evenly distributed on the surface and inner layer, meeting the requirements of MT181 specifications and suitable for flammable and explosive environments in coal mines. The inner and outer hot-dip galvanized steel pipes can be connected using quick connectors, flanges, and other methods, ensuring simple installation and reliable performance.