Longitudinal seam welder Material:stainless steel,carbon steel, AL ... Min.dia.:250mm We supply seam welder,flanging machine,automatic folding machine, automatic rolling machine,etc..We are specialized in ... set automatic welding machines,includ TIG,MAG,MIG machine and various cutting equipment.The products are widely ... .1mm/m8. Cylinder diameter:≥ID180mm Automatic longitudinal seam welding machine