Breadcrumb Home Welding WG 145/WELD 14595 WG 145/WELD 14595: Inert Gas Welding I Download as PDF Common Course Number WELD 14595 Program Welding Lecture/Lab Hours 5 Credits 5 This course provides instruction and practical application in gas tungsten arc welding (tig) and gas metal arc welding (mig). Prerequisites WG 115/WELD 11595: Introduction to Welding