Below is the method by which you can come to know your welding type:
For industrial use, the metal inert gas MIG welding is used and famous as gas metal arc
Inert tungsten gas TIG welding is also known as gas tungsten arc welding
The use of electric current by the shielded metal arc to firm an electric arc between metal and stick
Semi-automatic arc and flux-cored arc welding also quite famous in the market
All this means to say which type of protection your work recommends. All this you can get in the above guide