1. Steel Fabrication Business: A steel fabrication business specializes in creating custom metal products such as fences, balconies, gates, railings, stairs, and metal art. This type of business requires a good level of skill and knowledge in metalworking, welding and bending.

2. Steel Structural Contracting Company: A steel structural contracting company works on large-scale construction projects such as bridges, buildings and industrial plants. They form and shape steel into the desired size, shape and strength for the structures being built.

3. Steel Manufacturing Company: A steel manufacturing company is responsible for producing steel in large quantities from raw materials. This type of business requires extensive knowledge in metallurgy and metal production processes.

4. Steel Recycling Business: A steel recycling business collects and processes scrap metal for re-use or for disposal. This type of business requires knowledge of the recycling and disposal procedures for different types of scrap metal.

5. Steel Plating Business: A steel plating business focuses on coating steel parts with a protective layer of metal or other material. This type of business requires knowledge of different plating processes and the skill to apply them correctly.