... plate levelling rolls, casting rolls assembly etc.metal knife/shear blade:Dovetail flying shear knife is the key products in Orient, which ... for rotary knifes.The materials of metal knife/shear blade:Dovetail flying shear knife mainly include M2,LD,DC53,D2,H12, ... 1720+0.2 Stay straight edge blade 120+0.3Quenching and cleaning Quenching hardnesSHRC46-52 metal knife/shear blade:Dovetail flying shear ...