Application scope: The lifting type straight seam welding machine tool is mainly suitable for straight seam butt welding of carbon steel, stainless steel and other metal workpieces and thin plate workpieces. The structural forms of workpieces that can be clamped and welded by the straight seam welding machine include: metal sheets, cylindrical workpieces, conical cylinders, truncated cones, as well as box-shaped structures, flat plate splicing joints, etc.