... rolls, casting rolls assembly etc.metal knife/shear blade:Dovetail flying shear knife is the key products in Orient, which is ... rotary knifes.The materials of metal knife/shear blade:Dovetail flying shear knife mainly include M2,LD,DC53,D2,H12,H13 ... and cleaning Quenching hardnesSHRC46-52 metal knife/shear blade:Dovetail flying shear knife