Seam-welding is a continuous spot welding process where two metal sheets are welded together along a seam by applying heat and pressure through rotating wheel electrodes. This process is often used for welding applications where a continuous, leak-tight joint is required. Unlike multi-spot welding, which involves several discrete spots, seam welding creates a continuous bond along the entire seam.
This technique is commonly used in manufacturing processes such as the production of gas tanks, heat exchangers, and various cylindrical objects.