The metal extrusion process is a popular process in the metal fabrication world because it can produce long, strong pieces of metal formed from one solid piece of metal. In both hot and cold extrusion processes, a piece of metal is pressed through a die under enormous pressure. The pressure from the die shapes the metal into the desired finished shape. The pressure and lengthening of the metal gives the metal extrusions remarkable strength, even if they are thin and narrow pieces when the process is complete. The extrusion process is used to create a variety of shapes, including the t shape aluminum extrusion, c shaped extrusions, l extrusions, and h extrusions.