Quarry / Mining DTH Button Bits , Middle Air pressure Rock Drilling Bits

Quarry / Mining DTH Button Bits , Middle Air pressure Rock Drilling Bits 1'-2'Middle Air pressure rock drilling DTH button hammer 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