used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H used pullmax hydraulic double pinch plate bending roll PV7H