... seam welding machine SAW,TIG,MIG,MAG,etc for circular/longitudinal seam competitive price ISO9001,CE HUAFEI automatic steel ... seam welding machine 1. Brief introductionAutomatic Circular seam welding machine is designed for circular seam welding of round work piece,it ... working requirements, and is widely applied in circular seam welding fields, such as tube head welding, pipe-pipe welding and flange ...