Aluminium pipe is a high-strength hard aluminum that can undergo heat treatment strengthening. It has moderate plasticity in annealing, quenching, and hot states, and good spot welding performance. When using gas welding and argon arc welding, aluminum pipes tend to form intergranular cracks; The machinability of aluminum pipes is still good after quenching and cold work hardening, but it is poor when in the annealed state. Low corrosion resistance, often using anodizing and painting methods or adding aluminum coating on the surface to improve corrosion resistancAluminium pipe