... 6CrW2Si Cr12MoV 3ISO9001 4best price 5size according to the drawing Slitting blade We can mannufacture round tubes and heterogeneous tube molds from ... ,working rollers,back-up rollers,embossing rollers and slitting blades.*slitting blade :9CrSi,5CrW2Si,6CrW2Si,Cr12MoV*size according to the drawing*ISO9001*best price