The slitting knives are mainly applied for the sheet metal plate, strip, leather,Aluminum foil,film cutting and . The material is made of high quality cutting tool steel 9CrSi, SKD, SKH, T10, 6CrW2Si, Cr12MoV, LD, D2,H13 and W18Cr4V. After a perfect vacuum heat treatment processing, making hardness uniform, and precision ...Web