cnc milling automatic tool 1).Elevating platform Work height: 1-20m. 2). Load ... :380V Steelworks rolling mill roll changerThe rolling mill roll changer is a battery-type self-runing lifter with convenient, ... h.Addionally,it has functions such as lifting,right-left moving,, roller pushing, roller retracting, roller rotation,roller yaw ... the consumer’s demands. Steel rolling mill roll changer