Angle iron is formed in a specific shape to be extremely stable and able to bear excessive amounts of pressure and weight. Normally bent into an L-shape, angle iron is often used to frame or build various pieces of furniture, supporting structures, walls or shelves and other fabrication works. The thickness of the angle iron will determine the type of jobs it is suited for. Smaller pieces are normally used for jobs where the amount of pressure and weight will be minimal, while larger thicker pieces of steel are used on walls and supporting beams of buildings that must bear massive amounts of weight.