What is a seam welder

Seam welding machine refers to a resistance welding machine in which the weldment is assembled into an lap or butt joint and placed between two roller electrodes. The roller electrode presses the weldment and rotates, and sends electricity continuously or intermittently to form a continuous weld . It can also be said that the seam welder is an evolution of spot welding. Seam welding is widely used in the manufacture of joints that require tightness, and is sometimes used to weld ordinary non-tight sheet metal parts. The thickness of the welded metal material is usually 0.1~2.5mm.