Steel-welded construction,vibration to eliminate stress,with high strength and good rigidity. 
 Hydraulic top-drive,steadiness and reliability. 
 Mechanical stop,steel torsion bar to maintain synchronization,high precision. 
 Motorized-adjusting device of backgauge and ram's stroke,fine adjusting by handwheel,numerical display. 
 Deflection compensation unit installed on the top die.Manual crowned bottom die holder is adopted for the machine above 250 tons.