what are the tools we use by being a welder ?

Most welders also use :

Angle grinder to help smooth out joints,

Wire brushes, to clean metal surfaces or abrade them before welding

Chipping slag hammer

C-clamps, ball peen hammer, electrode tip cleaners, flint strikers, needle nose and linesmen cutting pliers.

Other tools to have on hand: cold chisels, flat-head and Phillips screwdrivers, round and flat files, levels and squares.

My brother is a welder and he is finding the career to be a great opportunity. He even travels in to different factories across the country to perform work.   Here are some links to get a good idea of the tools that are used to be a welder:

https://makemoneywelding.com/17-must-have-welding-tools-for-beginners/