Aluminum is a light metal with a small specific gravity, only 1 / 3 of that of iron, and a melting point of 658 ℃. It has good thermal and conductive properties, no magnetism and good plasticity. Because of its poor toughness, soft and easy to deform, aluminum alloy is made by adding manganese, copper, magnesium, silicon and other elements into pure aluminum, which makes it tough and not easy to deform. It has become the most widely used non-ferrous metal structural material in industry.

Aluminum is an active metal, which will quickly combine with oxygen in the air and form a tough aluminum oxide film on the surface. This film can not only prevent the inner layer of aluminum from continuing to combine with oxygen and play a protective role, but also has strong resistance to many corrosive media (such as 98% concentrated nitric acid, ammonium bicarbonate, urea, vinegar wax, formaldehyde, hydrogen peroxide, etc.). The higher the purity of aluminum, the stronger the corrosion resistance. Due to its good corrosion resistance, the aluminum alloy pipes manufactured have been widely used in the chemical industry and food industry.

The mechanical properties of aluminum in low temperature environment are still good and even improved. Therefore, aluminum alloy pipes can be used in pipeline systems such as cryogenic units, liquefaction units, air separation units and food freezing, and also can be used in pipeline systems that do not allow iron ion pollution media.

Dalian compressed air pipeline system is made of high-quality aluminum alloy material, coated with epoxy resin, and specially treated inside the pipeline to avoid oxidation, make its smooth inner surface never corrode, successfully prevent leakage and achieve the purpose of energy saving. Aluminum alloy pipes can transport compressed air, vacuum, nitrogen, inert gas, etc., and are commonly used in electronics, paper making, furniture, aerospace, auto parts, mechanical equipment, food manufacturing, textile printing and dyeing, new energy and other manufacturing industries, and can also be used in pharmaceutical manufacturing industries with extremely high requirements.