7 tapered button drill bit wear resistant 34mm tungsten carbide rock tapered drill bit Our tapered button bit was from high quality cemented carbide and produced with heat treatment technology,which connected ... Read More
32mm 7 Degree 7 Button Taper Button Bit For Gold Mine Dth Drilling Rig Different rock formation and rock drills require different taper angles. For low impact rock drills and softer rock formation, a narrow ... Read More
7 tapered button drill bit wear resistant 34mm tungsten carbide rock tapered drill bit Our tapered button bit was from high quality cemented carbide and produced with heat treatment technology,which connected ... Read More