PDC has a very high wear resistance and high impact resistance, widely used in geological exploration, coal exploration, drainage, and when drilling holes and so on. The drill is suitable for soft, medium and hard formations, such as limestone, shale, coal, silver gray, sandstone and other footage is characterized by fast, long life. PDC drill bit into: coring, ribs, not concave coring can be selected according to different needs. There are two bits of film processing methods, a sintered carbide powder and composite films, there are polycrystalline gage side; one for rigid inserts welded directly PDC. Common specifications: 73 94 112 131 151 171 200 220 NC HC PC and other concave drill main specifications are: φ94 φ113 φ133 φ153 coring drill, drill the outer diameter of the inner ribs can use the tool according to customer requirements and design of the aperture and the core.