Hunan Golden Drill Group,Co,Ltd

Our main products include , tricone bit(3-7/8``to 26``Covers almost all IADC codes),down the hole bits and hammer( DHD,COP,BR,SD,QL,Mission Shank), button bits, cross bits, chisel bits, coupling sleeve,casing tube, core tube, double core barrel, single core barrel, reaming shell, diamond bit, , PDC bit,,hard alloy bit,drilling pipe , drilling rig, pick cutters, all steel cross bits, road picks for grader, road planning and trenching bits, intergral drill steel,drill rod, core bits, coal cutters, pick cutters, carbide tips, ,and other rock drilling equipment, which are widely used for mineral exploration, geological prospecting, excavation engineering, tunneling, mining, quarrying, construction for road, highway, civil engineering.