... C Type Steel Purlin Machine C Type Steel Purlin MachineFeatures1. Controlled by auto PLC computer, and adopts all-hydraulic drive. hydraulic motor ... , through the central pumping station, perform the the punching shear by hydraulic ram2. running stable and reliable, punching shear accuracy , ... and can ensure the edge shape regular.3. drived by all-hydraulic motor, and equipped two sets of correction ...