Welders join and sever metals. They make metal parts used in construction, in manufacturing, for tools, and for equipment. There are many different types of welding, including arc, gas, and resistance. Welders must follow blueprints, develop patterns for projects, shape component parts, inspect component parts, and then weld parts together. They also build up worn parts of a completed project.
Pressure systems welders use shielded metal arc welding, gas metal arc welding, gas tungsten arc welding and flux cored arc welding processes to weld metal plates, tubes, and other structures in boilers and other pressure systems. They cut pipes and tanks and assemble these pieces, and may have to repair defective welds in boilers and pressure systems.