Straight seam welding machine (Straight seam welding machine) is an automated welding equipment that realizes the automatic completion of straight welding seams of welding workpieces through automation and mechanization. Straight seam welding machine is also called straight seam automatic welding machine and longitudinal seam automatic welding machine. It is a type of automatic welding machine. It can replace labor in large quantities, greatly improve production efficiency and welding quality, reduce labor costs, and improve the working environment of welding workers. For example, the shell fillet welding of large transformers, the straight seam welding of large cylinders, the straight seam welding of solar water heater cylinders, the straight seam welding of steel strip splicing on the production line, the welding of H-shaped steel, etc., all use straight seam welding in large quantities. machine.