Auto Series automatic tank welding machines are suitable for tank girth seam/vertical up seam/ butt,corner seam welding, it is of high welding efficiency and quality. Nanjing Auto Electric has design and manufacture different tank welding machines to realize automatic tank welding, the automatic girth seam welding machine are 30times as manual welding, and the electro-gas vertical up seam welding machine is 50 times as manual welding. Our tank welding machine can suitable for both bottom-to-top and top-to-bottom tank construction, can greatly save cost and manpower, highly raise the working efficiency and quality.