5083H321 large supply of seamless tubes, 5083H321 precision tubes, 5083H321 thin-walled tubes, 5083H321 thick-walled tubes, 5083H321 square tube aluminum is a non-ferrous metal pipe, refers to pure aluminum or aluminum alloy by extrusion into metal tubular material longitudinally along its full length hollow. Tubes are divided into the following categories according to shape divided: the tube, pipe, tube pattern, shaped by extrusion points: seamless tubes and ordinary extruded tubes by Accuracy Score: ordinary aluminum tubes and precision tubes, wherein the precision tubes generally require reprocessing after extrusion, such as cold-drawn precision pumping rolling press thicknesses: Normal and thin-walled aluminum tubes Performance: corrosion resistance, light weight. Characteristic of a high-strength aluminum hard, can be heat strengthened, in the annealed, hardened and thermal state just plasticity medium, spot welding is good, gas welding and aluminum welding time has a tendency to crack formed between crystal; aluminum tube after quenching and work hardening can be cutting is still good, bad in the annealed state. Corrosion resistance is not high, often with anodized and painted or surface plus clad layer method to improve corrosion resistance. It can also be used as a mold material. Aluminum advantages: First, welding technology advantages: suitable for industrial production of thin-walled copper and aluminum pipe welding technique, known as the world-class problems, is the key technology to connect the air conditioner aluminum and copper pipe. Second, the life of advantages: from the inner wall of tubes, due to the refrigerant without water, copper-aluminum connecting tube wall corrosion does not occur. Third, energy-saving advantage: air conditioner indoor unit and outdoor unit connecting pipe, the lower the energy efficiency of heat transfer efficiency, or that the more power the better the insulation. Fourth, good bending performance, easy installation, transfer machines use aluminum is widely used in various industries, such as: cars, ships, aerospace, aviation, electronics, agriculture, electronics, home, etc., aluminum in our lives have become ubiquitous