The following are the methods to identify the quality of aluminum-plastic composite pipes. Impact method: randomly select a section of aluminum-plastic composite pipe and hit it with a relatively hard thing, the pipe surface will be curved, if it is deformed to the point of rupture, it is of inferior quality; if the deformed surface cannot be restored, it is of ordinary texture; after deformation, it can be restored to The original shape is a high-quality aluminum-plastic pipe; visual inspection method: the high-quality aluminum-plastic pipe has uniform color/spray code, no color difference, and roundness less than 0.1; the middle aluminum layer interface is tight, and there are no rough marks; the inner and outer surfaces are smooth/smooth, without obvious scratches Marks/dents/bubbles/dead materials/converging lines; touch method: take a section of aluminum-plastic pipe and cut it vertically, and stick your fingers into the pipe. Raw materials, the PE materials of high-quality aluminum-plastic composite pipes in the domestic market are all from abroad, such as the United States and South Korea. If the raw materials come from recycled materials, the quality cannot be guaranteed.
