What are aluminium extrusion profiles?

Aluminium extrusion profiles – or extruded aluminium profiles – are the lengths that are created through the extrusion process. So the unworked length of aluminium that flows through the extrusion die is called a billet, and the formed lengths that emerge are profiles. Aluminium extrusion profiles come in an infinite range of solid and hollow shapes, such as L-shaped channels, square tubes and t-slot lengths.