What are common aluminum extrusion joining methods?

Aluminum extrusion joining methods refer to the techniques used to connect extruded aluminum parts in structural or functional assemblies. Common methods include mechanical fastening (such as bolts and rivets), adhesive bonding, and various welding processes like MIG, TIG, and Friction Stir Welding.

The choice of joining method depends on factors like load requirements, material thickness, corrosion resistance, and the desired appearance of the joint. Friction Stir Welding is increasingly used for joining aluminum extrusions, especially in applications requiring strong, seamless connections with minimal distortion—such as in transportation, aerospace, and structural framing systems.