... 1.high temperature 2.wear resistance 3.high hardness TSP drilling bit inserts from Henan Union Abrasives Corp with super- ... and super high pressure, with good performance for oil/mining drilling bits. Different shapes and sizes, such as cylinders, triangles, ... resistance, toughness, self-sharpening & high-temperature resistance can be used in gem-processing, wire drawing dies, coated cutters, etc. It ...