Roof Bolt Bit

Contact NowNatural Diamond Skin Impregnated Core Bit, Buy HQ,PQ Diamond Coring Bit for GeologicalMatrix Hardness Comparation Between Zuanlong Manufacturer and Other Company 1. The matrix height is 12mm for K series and 16mm for Series 2. K2/S2, K4/S4, K6/S6 are main choice, K3/S3, K5/S5, K7/S7 can adjust hardness 3. K10,S10 choice is for special formationRead More

Contact NowPDC 2 Wings Full Tips Bit,dust Hog Coal Mining Roof Bit ManufacturerGeneral Introduction PDC coal mining roof bit are mainly used to drill the roof and side supporting hole, the gas drainage, water infusion, geological exploration hole and grouting hole and so on for the coal mine seam, water conservancy and hydro-power, dam and roadway construction of bolt-mesh...Read More

Contact NowPDC 2 Wings Half Tips Bit,Dust Hog Anchor Shank Coal Mining Drill Bit SuppliersPDC anchor shank drill bits are mainly used to drill the roof and side supporting hole, the gas drainage, water infusion, geological exploration hole and grouting hole and so on for the coal mine seam, water conservancy and hydro-power, dam and roadway construction of bolt-mesh support.Read More