... welding machine/ hydraulic straightening machine HYJ-60B H beam hydraulic correcting machine1. Major technical Parametersa. Width of ... Provide goods and compose partsa. Main frame of correcting machine: base, left-and-right frame, motor, deceleration machine, guide wheel ... device, initiative hoist cylinder, former, mainframe, stand, hydraulic system, front/back elevating roller rack of pendulum type ...