Requires the use of complicated drawings, welding symbols, shop mathematics, weld shop tools, protractors, scales, squares, calipers, etc. Equivalent to four years of high school plus technical training in welding. Must pass any required tests associated with applicable standards, up to and including, but not limited to; AWS, ISO, MIL STD, International, ASNT. GMAW Certification or 3-5 years of equivalent experience.