Plastic-Coated Steel-Plastic Composite Pipe

Plastic-coated steel-plastic composite pipes are engineered with a steel core enclosed by a plastic coating, typically on both the inner and outer surfaces. This construction leverages the strength and pressure resistance of steel while providing the corrosion resistance and smooth flow characteristics of plastic. The pipes are ideal for applications involving the transport of fluids, such as water, gases, and chemicals, due to their combined properties of high rigidity, low fluid resistance, and excellent corrosion resistance.

The interior layer of plastic, often high-density polyethylene (HDPE), ensures that the pipes are non-toxic and do not impart any taste or odor to the fluid they carry, which is essential for drinking water supply systems. The exterior plastic layer protects the steel from external corrosion, and the overall construction results in a pipe that is lighter than solid steel pipes, easier to handle and install, and less prone to leakage.

These pipes are commonly used in civil water supply, industrial water supply, sewage transportation, and even in food processing and medicine due to their good sanitary properties. The steel-plastic composite structure also provides excellent resistance to chemicals, making them ideal for chemical processing plants and other industrial applications where resistance to aggressive chemicals is crucial.

The connection methods for steel-plastic composite pipes can vary but often include threads, grooves, and flanges, allowing for secure and stable joints。These pipes are known for their smooth inner walls, which reduce fluid resistance and prevent the accumulation of water scale, ensuring efficient water flow。Their high flexibility and good toughness make them suitable for various installation environments, including direct burial or embedding in buildings.