... ,metal or stretch film and others.Blades are designed for slitting procees in film,foil,paper and converting application.Its mainly ... -2,SKD11,H13K,H13,Cr12MoV,9CrSi and so on.Our factory is using the full range of sharpening automation equipment: ... line----automatic sharpening assembly line.Production fast,the blades are sharp and durable. tungsten steel small circle saw blade for paper and fiber