round blade for plastic product 1.specification:(15-80)D*(0.2-1.9)T 2.material:carbon steel 3.round blade 4.blade for paper round blade for plastic productOur company has kinds of round blade with different specifications. Our company uses the high quality import materials to produce the blade.The mainly materials are SK2,SK5,SK4,SK7,SKS7,SKS9,SKH-51,SKH-9,SKH-2,SKD11,H13K,H13,Cr12MoV,9CrSi and ...