These Seam Welding machines are precision and robust construction suitable for long trouble-free service. The application of these machines are in the manufacture of drums and barrels, fuel tank, silencer, muffler etc. JK. Electricals can ... supply SPMs for seam welding application for job such as fully automatic barrel and shell welding (Longitudinal), tub cover welding (circumferential), shock absorber welding, fuel tank welding and other special items.