Fusion welding is one of the most important welding processes used in construction and fabrication. In this video, you’ll learn the basics of fusion welding, where metals are joined by melting them using heat sources like arc welding, gas welding, TIG, MIG, and laser welding. You’ll also see how filler metal is added, how the molten weld pool forms, and why fusion welding creates strong and permanent joints. This process is widely used in pipelines, steel structures, workshops, and heavy industr