ON-LINE HOLE-PUNCHING roll forming machine 1,SUIT UPRIGHTS, BEAMS 2,Hydraulic Punch 3,Roller Feeder roll forming machine LMS ON-LINE HOLE-PUNCHING ROLL FORMING PRODUCTION LINE1 ... MachineThis line equipped with 15T hydraulic punching machine.7) Roll Forming MachineRoll Forming rollers: material GCr15, hardness after heat treatment HRC48-50, hole diameter (roller ...