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Shielded Metal Arc Welding Concepts - SMAW In this 3rd semester course the focus will be the theory of the Shielded Metal Arc Welding (SMAW) process. Students will learn about the equipment, maintenance and the specifics of the process of SMAW welding. Some of the areas covered include electrodes, polarity, and amperage. Welding open root and pipe will be examined. Students will learn how to identify and troubleshoot mechanical problems and recommend solutions.