Yanggu Haoquan Rock Tools Co., Ltd is the professional manufacturer and exporter of foundation drilling tools, asphalt road planing bits, excavating coal cutter bits; construction cutter bits for tunneling, trenching and drill auger and rock drilling tools, we also supply the matched tungsten carbides products. We have many years exporting experiences in these field. We have very good relationship and reputation among our customers. We have very strong technical and producing experiences to make best quality tools. We are developing our business relationship with many famous rock tools and tungsten carbide companies in world. We have approval IQNET and CQM ISO9001: 2000 quality system certificate. We assure that we will give you best quality products and service to meet your requests. 1. Miner bitsInclude all kinds of round shank cutter bit and flat cutter bits, for excavate coal machine as the replacements of kennametal. Such as c31hd, u765, u765hd, u85hd, u84, u94, u47, u47hd etc and coal roof bits and coal hex steel tubes. 2. Road planing bits for road milling machine replacement w5h, w6h, w6 / 22, w1-13 for asphalt road milling and concrete road milling. And conicial bits and flat picks for soil stabilizer machine etc. Shank dia=20mmc, 22mm etc3. Foundation drilling tools for for rotary drilling, trenching, tunneling, mining, and aslo casing bits and cutters for shield machine. Such as C31HD, B47K17. 5h, B47K19H, B47K22H, B47GK19, B47GK22, also welding bars BA50, BA55 BA70-38 and Flat cutter teeth BFZ80, BFZ70, BFZ72, Holders C30, B43H, BHR73 B85 etc. 4. Blast furnace tapping hole drill bits and rod for H25, R32, T38 cross bits and matched furnace tap hole rod. 5. Rock drilling toolsTaper drill rods, Shank h22x108mm, (6, 7, 11, 12 degree taper) in most lengths. Taper button bit, cross bits and chisel bit with (6, 7, 11, 12 degree taper) . Bit diameter: 20mm-57mm. Thread button bit-face design: flat face, drop centre, tungsten carbide hemispherical and ballistic, normal and retrac body. Threaded r32, t38, t45, t51) , bit diametre: 45mm-127mm) ; Couplings sleeve-manufactured with a middle stop to prevent walking along the thread. Include couplings sleeve (threaded r22, r25, r28, r32, r38, t38, t45, t51) Shank adaptors-carburized and manufactured with tight tolerances and controlled straightness. 6. Down the hole hammers and dth bitsOffer ir hammer, dhd3. 5, dhd340a, dhd360, dhd380, and low pressure hammers cir65a, cir90, cir110, cir150, cir170 etc. Dth bits: 70mm-254mm bits with flat face, concave design fit for the atlas copco and ingersoll-rand model etc.