what is the best drill bit

For Granite Rock Advantages: Changsha Chaojingang Machinery Manufacturing Co., Ltd. is one of the manufacturers in China's drillin...

... for water well PDC is widely used in projects.With selecting the the body and teeth material,we developped the ...

... Diamond Head Pdc Product Description PDC is widely used in projects.With selecting the the body and teeth mat...

...proud to offer some of the on the market. Our Tricone are available in a range of sizes, from 3-26 inches, and can be...

... M35 Co5% HSS Co Stubby Body Twist 135 Deg. Split Point Cobalt Description of Double Ended HSS s: PREMIUM MAT...

... Diameter 64 - 152mm Ballistic Rock Tungsten carbide rock 1) tungsten carbide rock is made with qua...

... 40mm 7 degree 4/5 button hard rock button conical 1 Product description of Rock We are a manufacturer of va...

... 76mm Flat Face Heat Treatment Description Of T45 Flat face Heat Treatment Rock Threaded button cover regular,...

... Steel grade in order to guarantee maximum performance. Our are used for Construction, Water well , Geothermal , Micropiles, Q...

...situations, you need to multiple-step holes in metals. Can be very complicated step hole, also this kind of step can be used in in...

...lifetime of the design and precise CNC ground to gurantee excellent performance. Product Description Application: Used on ...

... including testing the shape, diameter, reaming diameter, length composition and defects of raw materials. Tungsten carbide and lubricating grease ...

... roof bolting applications, as we are Chinese leading manufacture of rock ,we have rich experience in reseraching and producing .Our p...

...: #30,#40,#50,as customer request. Thread: M14 Shank. Special design are available upon request Feature : Good performance : quality & sharp c...

... for Hammer T51 115mm Button Bit For Quarrying And Mining Thread Button are made by alloy steel bar of quality and tungs...

... many different designs of masonry and you usually get what you pay for. One of the is the tongyu masonry . This ingenious des...

... to threaded converter type working diameter Production process OEM Straight shank 3-100MM Plating / Sintering Support Taper...

main products include: core /reaming shells/ rods/casings/coring systems and accessory tools and equipments.The main products include gl...