Aluminum tube is a kind of non-ferrous metal pipe, which is made of pure aluminum or aluminum alloy and extruded into a hollow metal tube along its longitudinal length. Aluminum tubing has the characteristics of corrosion resistance and light weight, which is widely used in all walks of life, such as automobile, ship, aerospace, aviation, electrical appliances, agriculture, electromechanical, home furnishing, etc. Aluminum pipe is a kind of high strength duralumin, which can be strengthened by heat treatment. Due to its low corrosion resistance, anodizing and spraying methods or adding aluminum coating on the surface are often used to improve the corrosion resistance. In addition, aluminum tube can also be used as mold material.