... 3.size:40*0.3*13.120T 4.material:tungsten steel 5 high precisiion Tungsten carbide blades and machine knives will ... ferrous metal grooving and cutting process,including tool steel,die steel,bearing steel,refractory steel,stainless steel,cast iron and other ferrous materials, which are ... line.Production fast,the blades are sharp and durable. tungsten steel small circle saw blade for paper and fiber