Welding is a sculptural or fabrication process where materials such as thermoplastics and metals are joined. The joining process makes use of heat to melt the parts. The subsequent cooling of these parts causes fusion. Different sources of energy can be used for welding such as electric arc, gas flame, laser and electron beam. Arc welding is a type of welding where electric current is used to maintain an electric arc between the base material and an electrode in order to melt the metal at the welding point. A few subtypes of arc welding are gas tungsten arc welding and gas metal arc welding. The topics included in this book on welding are of utmost significance and bound to provide incredible insights to readers. This book elucidates the concepts and innovative models around prospective developments with respect to welding. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest advances within this field.