Button Bit, Shank Adapter, Rock Drill manufacturer / supplier in China, offering Drill Rods Featuring a Special Surface Finish Reduce Frictional Drag and Improve The Flow of Drilling Fluids in The Annulus, Drill Pipes for Core Drilling in Mineral Exploration Maintain Rigidity for Accurate Core Orientation and Recovery, Mining Grade Drill Steel with Excellent Weldability Allows for Field Repair and Modification Using Standard Welding Procedures and so on.