... and printing machine,punching machine, forming machine, edge welder, union-loping machine, length auto-measuring and cutting machine. The forming roller, ... =1.2 - 1.6mm) 3) Welding mode: DC double edge welding 4) Main motor: 30kW 120 - 1,200rpm 5) ... and printing machine,punching machine, forming machine, edge welder, union-loping machine, length auto-measuring and cutting machine. The forming roller, ...