0credit hour(s)Prerequisite(s):PMT0106, PMT0112, PMT0121, PMT0126, PMT0164, PMT0122, PMT0130, PMT0134. Corequisite(s):PMT0138, PMT0145. This course is an introduction to tungsten inert gas (TIG) welding. This beginning course emphasizes the principles involved in the operation of TIG equipment. Contact: 115 clock hours. Additional fee. Does not count toward A.A. or A.S. degree.