Aluminum square pipe is a common aluminum alloy products, widely used in architectural decoration, machinery manufacturing, automotive industry and other fields. The manufacturing process mainly includes the following steps: Raw material preparation: The production of aluminum square pipe first requires high-quality aluminum ingots as raw materials. These ingots usually contain a specific proportion of other metals (such as magnesium, manganese, etc.) to form aluminum alloys with different properties. Smelting and casting: Aluminum ingots and other alloying elements are placed in a furnace and heated above the melting point to melt them completely. Then the molten aluminum alloy is made into casting rods or billets by continuous casting or semi-continuous casting. Extrusion molding: the casting rod or casting blank is preheated and sent to the extrusion press, and the extrusion action of the mold makes the aluminum alloy material form an aluminum square tube with the required cross-section shape (such as square). This is a key step in the manufacture of aluminum square tubes, where the design of the mold directly affects the size and surface quality of the final product.