... , feeding guice, main machine, 1 The production line process flowUncoiling—guiding device---lubricating system----roll forming---punching ... quenching HRC58-62, with hard chrome on the surface, with high wearing resistance.Voltage: 380V/50HZ, 3 phase.Line speed: about 15m ... quenching HRC58-62, with hard chrome on the surface, with high wearing resistance.Voltage: 380V/50HZ, 3 phase.Line speed: about 10m ...