... :0.3~1.5mm TIG welding Min.dia.:250mm We supply seam welder,flanging machine,automatic folding machine, automatic rolling machine,etc..We ... specialized in design and make all kinds of complete set automatic welding machines,includ TIG,MAG,MIG machine and various cutting equipment ... m/min7. Moving precision:±0.1mm/m8. Cylinder diameter:≥ID180mm Automatic longitudinal seam welding machine