QY12K-NC HYDRAULIC SWING BEAM SHEAR(CUTTING MACHINE)),hydraulic cutting machine Product Description:The performance of our metal sheet ... eliminate stress, with high strength and good rigidity. 2. Hydraulic driven and returning stroke is activated by the accumulator or ... as optional with E20,DA-250 and DA-350system Qy12k-Nc Hydraulic Swing Beam Shear(cutting Machine),hydraulic cutting machine........