1. You can take a section of aluminum tube and observe it through light. Whether the color of the aluminum-plastic pipe is uniform, whether there is color difference, the aluminum interlayer interface is narrow, there is no rough trace, the overall surface of the pipe is very smooth, and the radian is standard. This is a high-quality pipe.
2. Take a section of aluminum-plastic pipe, cut it vertically and insert it into the pipe with your fingers, the nozzle is smooth, and the material without texture or burrs is preferred.
3. Compared with raw materials, the PE materials of aluminum-plastic composite pipes in the domestic market are from abroad, such as the United States and South Korea. If the raw material is recycled material, which cannot guarantee the quality. So be sure to choose some branded water pipes when purchasing.