... and aluminium.No deformation,no intergranular corrosion, the seam is excellent, with high automation and easy to operate.Welding speed can ... sheet is 0.4-1.0 mm in thick, with smooth welding seam, signal welding and double forming. There is little ... after welding, and corrosion of grain boundary complies with quality requirements. Automatic Straight Seam Welding Machine, Solar Water Heater Machinery