Metals Used In Manufacturing Iron Railings. The introduction of metal working technology paved the way for the manufacture of iron railings that can be important features of residential homes and buildings. Welding technology makes the act of joining metals possible by means of heating and hammering. Metal railings are one of the things that would never go out of fashion. Iron is the most common materials for making railings. It is also the most durable. There are three kinds of iron railing materials such as steel, cast iron, and wrought iron railings. Wrought iron railings are the most expensive railings. Cast iron railings are equally beautiful but very fragile. These railings are usually found in the homes of the rich. Steel railings are the most commonly found railings in most home because these are easier to mould and fabricate. These are the most popular metal used in iron railings. With the use of the right equipments,and supplies for manufacturing in metalworking metal working products would be easily brought to light.