Uses/Operates hand and power tools common to the welding trade, such as welding machine power sources, wire feeders, welding guns, air carbon arc gouging, oxy-fuel equipment, plasma cutters, angle grinders, needle guns, plate clamps, etc. Uses the proper sequence of operations to execute assembly and welding of the parts as effective as possible, also to maintain/obtain the required geometry and to prevent distortion of weldments; when needed, uses jacks, turnbuckles, wedges and other tools to correct distortions.