The steel-plastic composite pipe is a composite pipe material composed of an inner plastic pipe and an outer steel pipe. It combines the advantages of steel pipe and plastic pipe, and it has good corrosion resistance, excellent pressure resistance and good insulation performance. Secondly, the plastic pipe in the inner layer of steel-plastic composite pipe has a smooth inner surface, which reduces the frictional resistance of the fluid and improves the fluid transmission efficiency of the pipeline. In addition, compared with pure steel pipes, steel-plastic composite pipes are lighter in weight and easy to handle and install.

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