Aluminum tubes are mainly divided into the following categories.
According to the shape: square tube, round tube, pattern tube, special-shaped tube.
According to the extrusion method: seamless aluminum tube and ordinary extrusion tube.
According to accuracy: ordinary aluminum tubes and precision aluminum tubes. Precision aluminum tubes generally need to be reprocessed after extrusion, such as cold drawing, fine drawing, and rolling.
Divided by thickness: ordinary aluminum tubes and thin-walled aluminum tubes.
Performance: Corrosion-resistant, light weight.
Features
It is a kind of high-strength hard aluminum that can be strengthened by heat treatment. It has medium plasticity in annealing, fresh quenching and hot conditions, and has good spot welding properties. Aluminum tubes have a tendency to form intergranular cracks when gas welding and argon arc welding are used; aluminum tubes The machinability is good after quenching and cold work hardening, but poor in the annealed state. The corrosion resistance is not high, and anodizing and painting methods are often used, or an aluminum layer is added to the surface to improve corrosion resistance. Can also be used as mold material.
