2, natural corrosion resistance, aluminum can form a dense alumina protective layer on the surface when placed in air, which can prevent further oxidation of aluminum.

3. Balance the voltage. Aluminum has good conductivity, which can better conduct the weak current generated by various reasons in the coil.

4. Easy forming: Aluminum products with different cross-sectional shapes can be easily obtained by using different dies and extrusion process.

5. Easy to process: aluminum profiles can be easily processed into required specifications by sawing, drilling, punching and folding, and the energy consumption during processing is far lower than that of steel.

6. Low temperature resistance: ordinary steel, especially the welding area, is fragile in low temperature environment, while the strength of aluminum increases.

7. Environmental protection and easy recycling: Only 5% energy is needed in the process of recycling aluminum from aluminum ore to profile.