Longitudinal seam welder Material:stainless steel,carbon steel, AL alloy Wall thickness:0.3~1.5mm TIG welding Min.dia.:250mm We supply seam ... welder,flanging machine,automatic folding machine, automatic rolling machine,etc..We are specialized ... /min7. Moving precision:±0.1mm/m8. Cylinder diameter:≥ID180mm Automatic longitudinal seam welding machine