From the aspect of appearance, aluminum square tube:
 

The aluminum square tube is a name for the square tube, that is, the aluminum tube with equal length on four sides. The rectangular aluminum tube is the aluminum tube with equal length on four sides. It is rolled or extruded into a square tube after processing and then cut to the required length.
 

According to the difference in shape, there are several types of aluminum square tubes, U-shaped aluminum square tubes, grooved aluminum square tubes and profiled aluminum square tubes. The profiled aluminum square tubes are a kind of extruded aluminum products with high hardness. However, because they are extruded by molds, the size will be limited. Generally, they are common specifications. If you want to customize the specifications, you can open a new mold.
 

The aluminum square tube can be divided into profile aluminum square tube and aluminum plate aluminum square tube:
 

The profile aluminum square tube has the characteristic aluminum ventilation extrusion molding, the product hardness and straightness are higher than other products, the installation structure is to use the upper main bone, the screws and specially made components are linked with the profile hammer, and the wind resistance is strong.
 

The aluminum square tube of aluminum plate is formed by continuous rolling or cold bending, and the installation structure is a special keel buckle structure. The installation method is similar to the ordinary strip buckle plate, which is simple and convenient, and can be used with interior decoration.
 

Aluminum square tubes are divided into structural aluminum square tubes, decorative aluminum square tubes, construction aluminum square tubes, industrial machinery aluminum square tubes, etc.
 

In terms of materials:
 

The main material of aluminum square tube is 6-series aluminum alloy, also known as aluminum alloy square tube. This material can not only meet the relevant requirements for the use of aluminum properties, machining process, spraying process, oxidation and coloring process.
 

The 6000 series aluminum square tube represents 6061 and 6063, which mainly contains magnesium and silicon. It is an aluminum extrusion product, suitable for applications with high requirements for corrosion resistance and oxidation. Good usability, easy coating and good processability.
 

6061 requires various industrial structures with certain strength, weldability and corrosion resistance, such as aluminum tubes, aluminum square tubes and aluminum bars for manufacturing trucks, tower buildings, ships, tramcars, furniture, mechanical parts, precision machining, etc.