Advanced gas tungsten arc welding, building upon theory covered in previous course work. Welding applications of special metals such as copper, nickel, cobalt, and titanium are discussed. Theory and practice of GTAW on ferrous and non-ferrous metals in all positions are covered, as are pipe and tube set-up and welding of open root and consumable inserts. 2 Credits (1 Lecture - 3 Lab) Prerequisite(s): WEL123 and WEL129. Corequisite(s): WEL219. Spring Only.