... 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 ... and make all kinds of complete set automatic welding machines,includ TIG,MAG,MIG machine ... /m8. Cylinder diameter:≥ID180mm longitudinal seam welder