Aluminum tubes are mainly divided into the following categories
According to the shape:square tube, round tube, pattern tube, shaped tube, global aluminum tube.
According to the extrusion method: seamless aluminum tubes and ordinary extrusion tube
According to precision: ordinary aluminum tubes and precision aluminum tubes, of which precision aluminum tubes generally need to be re-processed after extrusion, such as cold drawn precision pumping, rolling.
According to the thickness: ordinary aluminum tubes and thin-walled aluminum tubes.
Performance: corrosion resistance, light weight.
Characteristics
For a high-strength hard aluminum, heat treatment can be strengthened, in the annealed, just quenched and hot state of plasticity in the medium, spot welding weldability is good, with gas welding and argon arc welding when the aluminum tube has a tendency to form intergranular cracks; aluminum tube in the quenching and cold hardening of the machinability is still good, in the annealed state of bad. Corrosion resistance is not high, often using anodic oxidation treatment and painting methods or surface plus aluminum cladding to improve corrosion resistance. Can also be used as mold materials.
Aluminum tube advantage: First, the welding technology advantage: suitable for industrial production of thin-walled copper and aluminum tube welding technology, known as the world-class problem, is the air conditioner connecting tube aluminum instead of copper key technology.
Second, the service life advantage: from the aluminum tube wall, because the refrigerant does not contain moisture, copper and aluminum connecting tube wall will not occur corrosion phenomenon.
Third, the energy-saving advantage: air conditioner indoor unit and outdoor unit connection piping, the lower the heat transfer efficiency the more energy-efficient, or, the better the insulation effect the more power saving.
Fourth, excellent bending performance, easy to install, move the machine