... drilling tools, mining tools, DTH Drill tools. Construction tools and excavating coal pick cutter tools , we can also produce ... requirements. We sincerely welcome our friends of both home and abroad to come for business talks.About products1. Integral ... bit, face design: Flat face, Drop centre, Normal and Retrac body.Tungsten carbide (Buttons): Spherical, Ballistic and Conical. (Threaded R32, R38, T38 ...