Forging Type DTH Drill Bit , ISO CE Tungsten Carbide Material Mining Drill Bits

Forging Type DTH Drill Bit , ISO CE Tungsten Carbide Material Mining Drill Bits 4' Middle pressure DTH hammer button bits with Flat, Concave , Convex , Drop Center bit face Introduction DTH Drill Button Bits are produced from premium quality nickel-alloy steel for increased durability and wear characteristics. Specific heat treatment standards and special “stress relief” processes ensure consistent performance. DTH hammer bits are designed for maximum performance and hole