Aluminum angle is used in a innumerable amount of ways in commercial and industrial structural projects. Its easy to machine, cut and weld. Aluminum angles come in equal or unequal lengths. The common sizes are 1/16″, 3/32″, 1/8″, 3/16″, and 1/4″ wall thicknesses. 6063 aluminum angle is used in a many architectural projects because of its smoother finish.