Description. Welders are responsible for fitting and welding of steel, aluminum and stainless- steel parts using a MIG and/or TIG process and also to ensure each job is ran with safety, accuracy and timeliness in the welding area. Requirements. Set up welding machines based on the job at hand or using a Welding Procedure Specification. Read and interpret blueprints and/or drawings to determine the specific welding requirements. Weld components/ma...