Aluminum strip for ventilation pipe, with aluminum content of at least 99%, is the highest alloy content in 1000 series, so it has the strongest mechanical strength in this series. Similarly, 1100 aluminum strip also shows properties similar to those of other series of pure aluminum alloys. Such as excellent ductility, processability, corrosion resistance, weldability, surface treatment, conductivity and heat transfer. Due to its excellent processing performance, 1100 aluminum strip can be well adapted to the application and is difficult to form. Therefore, 1100 aluminum alloy coil is often used for large refrigerator aluminum lining, HVAC, aluminum clad plate, architectural decoration, deep stamping parts, sheet metal processing parts, nameplates, etc.