Aluminium pipe is a kind of non-ferrous metal pipe, which is made of pure aluminium or aluminium alloy by extrusion into a hollow metal tube along its longitudinal length. It may have one or more closed holes, uniform wall thickness and cross-section, and is delivered in straight lines or in rolls. It is widely used in the automotive, marine, aerospace, aviation, electrical, agricultural, electromechanical, household and other industries. Here is an excellent aluminium pipe supplier SHANDONG OK STEEL CO., LTD to introduce the classification of aluminium pipe, aluminium pipe characteristics and surface treatment of aluminium pipe.

Classification of aluminium pipe

aluminium pipe is divided by shape: square pipe, round pipe, patterned pipe, shaped pipe, global aluminium pipe. aluminium pipe is divided by extrusion method: seamless aluminium pipe and common extrusion pipe. aluminium pipe is divided by precision: common aluminium pipe and precision aluminium pipe, where precision aluminium pipe Generally need to be re-processed after extrusion, such as cold-drawn and refined, rolling. Aluminium pipe by thickness: ordinary aluminium pipe and thin-walled aluminium pipe.

Aluminium pipe characteristics

5086 aluminium pipe is a high strength, corrosion resistant, light weight hard aluminium, can be heat treated and strengthened, in the annealed, freshly quenched and hot state plasticity is medium, spot welding weldability is good, with gas and argon arc welding aluminium pipe has a tendency to form intergranular cracks; aluminium pipe in the quenched and cold hardened machinable properties Still good, bad in the annealed state. Corrosion resistance is not high, often using anodic oxidation and painting methods or surface cladding aluminum layer to improve corrosion resistance. Aluminium pipe advantages: First, welding technology advantages: suitable for industrial production of thin-walled copper aluminium pipe welding technology, known as a world-class problem, is the key technology of the air conditioner connection tube aluminium instead of copper. Second is the service life advantage: from the aluminum pipe wall, because the refrigerant does not contain moisture, copper and aluminum connection pipe wall will not occur corrosion phenomenon. Third, the energy-saving advantage: air conditioner indoor unit and outdoor unit connection pipeline, the lower the heat transfer efficiency, the more energy-saving, or, the better the insulation effect, the more energy-saving. Fourth, excellent bending performance, easy to install and move the machine.

Surface treatment of aluminium pipe

Chemical treatment: oxidation, electrophoretic coating, fluorocarbon coating, powder coating, wood grain transfer, Mechanical treatment: mechanical drawing, mechanical polishing, sandblasting.