Those tungsten carbide knife with OD from 30 to 350mm are widely used in the cutting different materials. Those tungsten carbide knife with OD from Φ30 to Φ350 mm are widely used in the cutting of following materials, such as: Electronic circuit board, asbestos tile, as well as leather, paper, plastic film, rubber, and others in printing, package, textile, tobacco, non ferrous foil.