Epoxy-coated plastic-coated steel pipes boast advantages such as bright pipe walls, excellent drainage performance, low fluid resistance, and non-scaling compared to other piping options. Additionally, the linear expansion coefficient of large-diameter plastic-coated pipes is quite small, making them highly advantageous as main pipeline materials, effectively addressing the issue of high linear expansion coefficients in other plastics and conventional pipes. Large-diameter plastic-coated steel pipes are an upgraded, high-value product compared to traditional steel-plastic and galvanized pipes. They offer a comprehensive set of features, including the high strength and high elongation of steel pipes, good low-temperature brittleness, low expansion coefficient, as well as the corrosion resistance, wear resistance, and low fluid resistance of plastic pipes. They are a new type of large-diameter drainage and anti-corrosion green pipe, increasingly being chosen by various industries in China. Features: 1. Suitable for burial and moist environments, and can withstand low temperatures. 2. Free of burrs, with smooth pipe walls, not prone to scaling or microbial growth. 3. Good pressure resistance, with a maximum pressure of up to 6 MPa. 4. Excellent corrosion resistance. 5. Low water absorption rate, high mechanical strength, and low friction coefficient, enabling long-term use.
PVC Coated Steel Pipe is a composite material consisting of a steel pipe with an inner wall fused with a layer of 0.5 to 1.0mm thick polyethylene (PE) resin, ethylene, epoxy (EP) powder, non-toxic polypropylene (PP), or non-toxic polyvinyl chloride (PVC) organic substances. It not only retains the advantages of steel pipes such as high strength, easy connection, and resistance to water erosion, but also overcomes the shortcomings of steel pipes, such as easy corrosion, contamination, scaling, and the low strength and poor fire performance of plastic pipes, with a design life of up to 50 years. Regarding the fifth perspective, bending and flattening, during transportation, it is inevitable that there will be minor impacts that can cause the pipe components to bend or flatten. Therefore, the product's resistance performance is crucial. We take pipe components of certain lengths for testing, with the former being tested using a bending machine and the latter being tested directly with a pressure testing machine. If the product remains unchanged after the test, it indicates stable performance. Due to the high welding temperature of up to 800°C, the epoxy coating on the outer wall of the steel pipe is easily burned. Therefore, it is necessary to repair the pipe wall at this time to achieve the anti-corrosion effect of the coating. However, how to carry out the repair is a rather troublesome issue. We are pleased to provide you with the answer here. Our factory has specialized technical personnel who, upon encountering this issue, use a repair liquid to evenly brush a well-mixed repair liquid of the same color as the coating on the pipe wall. After curing, the repair work is complete.