diamond pdc roof bolt drill bit

Contact NowPDC Three Wings Concave Drill Bit,PDC Concave Bit, Non Core Drill Bit for MiningPDC Three Wings Concave Drill Bit are mainly used for penetrate the degassing hole, drain hole and grouting hole of coal mine.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
Contact NowPDC Three Wings Drag Bit, Scarp Drill Bit for Well DrillingZuanlong supplies a variety of drag bits for many types of projects drilling needs, including 3 wings type bits for soft and medium formations, 4 wings, especially 4 wings chevron type for harder formations. Each of our bits is machined from a forging to exacting standards and then tipped with tungsten carbide. Mining grade tungsten carbide tips are brazed to the bits wing face for heavy duty bits. Then pin threads are CNC manufactured and wings surfaced hardening subsequently.Read More
Contact NowPDC Four Wings Drag Bit, Scarp Drill Bits SupplierDrag bits are the perfect solutions for soil, sand, sticky clay, and grouting drilling. And Customization are available.Read More
Contact NowPDC 3 Wings Half Tips Bit, Buy Roof Support Bolting Drill BitPDC Roof Support Bolting Drill Bit are mainly used in cola mining roof supporting, gas drainage, water infusion, geological exploration hole and grouting hole drilling.Read 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 NowThree Wings Sintered Concave Drill Bit, Non-coring Bit with Matrix Body SupplierZuanLong PDC Sintered concave drill bit is mainly used for drilling soft-medium formation, such as mud shone, limestone, shale, sandstone and granite etc, it has been wildly used to penetrate the degassing hole, drain hole and grouting hole of coal mine, water, road construction, bridge and building. And...Read More
Contact NowNon-coring Gear Pillar PDC Drill Bit for Hard Rock,Pillar PDC Drill Bit SupplierZuanlong PDC Pillar Drill Bit has been wildly used to coring-drilling for geological exploratory of coal measure stratum. The normal type is suitable for the f<=10, the reinforced type is suitable for f<=16. Note: Customization are availableRead More
Contact NowPDC Four Wings Concave Drill Bit, Non Coring Bit for Well DrillingThe four wings normal type concave drill bits suits for f<=10, the reinforced type suites for f<=15Read More
Contact NowFour Wings Concave Drill Bit With Sintered Body For Hard Rock, PDC Matrix Body Bit SupplierPDC Sintered concave drill bit is mainly used for drilling soft-medium formation, such as mud shone, limestone, shale, sandstone and granite etc, it has been wildly used to penetrate the degassing hole, drain hole and grouting hole of coal mine, water, road construction, bridge and building. And...Read More