Steel fabrication is the process of making steel from iron ore. The first step is to crush and blend the iron ore into a powder. This powder is then heated until it liquefies, and carbon is added to form different types of steel. The liquid steel is poured into molds called pigs and hogs, which give it its characteristic shape. It's then allowed to cool and solidify, after which it's cut into bars, plates, or other shapes.

There are a variety of ways to fabricate steel, but the most common methods involve either casting or welding. Casting involves pouring molten steel into a mold, while welding involves heating steel until it becomes molten and then joining two pieces of metal together.