A: Based on welding power source : there are automatic TIG welding machine ,automatic MIG welding machine ,automatic submerged arc welding machine(automatic SAW machine)

Based on application : there are Automobile parts welding machine,Automatic scaffordding welding machiine ,pipe to flange Automatic welding machine ,Tank Automatic welding machine,Hydraulic cylinder piston rod Automatic welding machine,wheels Automatic welding machine and so on .

Based on welding seam type : circular/girth seam welding machine ,longitudinal /straight seam welding machine ,Square seam welding machine.irregular seam welding machine