1.Professional manufacturers 2,processing with supplied drawings 3.Years of ... shape of cutting tools made whole, which are often made for different shapes of the blade, welding, adhesive, mechanical ... gripping blade or die in the concrete use.Cemented carbide cutting tools than high speed steel paper cutting speed ... (86 ~ 93 HRA, equivalent to 69 ~ 81 HRC); Tungsten Carbide mechanical flat seal ring