Breadcrumb Home WLDG Welding WLDG-1428 WLDG-1428: Introduction to Shielded Metal Arc Welding (SMAW) Download Catalog PDF Download Page PDF Program WLDG Welding Lecture Hours 3 Lab Hours 3 Credit Hours 4 Course Type N An introduction to the shielded metal arc welding process. Emphasis placed on power sources, electrode selection, and various joint designs. Prerequisites WLDG-1323, WLDG-1425.