China T38 76mm T45 89mm hard rock drilling bits rods for quarry ,mining drilling​

1 Presentation of Rock Drilling Bits

US imports of high-quality steel and carbide manufacturing of China's best, all the threads we produce hot button drill bit technology.

2 Materials and produce process details of  Rock Drilling Bits

Material  -  we use 45CrNiMoVA production of tungsten carbide and YK05 our cone drill bit ,  these two materials are world-renowned drill production materials . 

Our advanced technology --- the tapered drill wheel adopts thermal technology ,  which is the most advanced technology for the production of tapered round drills . 

When cemented carbide or reduced permeability shows signs of damage ,  button drills should be re-grinded
Fixed abrasive program usually brings good work habits . 

For example ,  after checking the borehole ,  a plurality of holes drilled at the end of a shift or reground .  Premature grinding is not necessarily uneconomic ,  because of less demand for grinding carbide .  The best reground ,  it will not be damaged and reduced productivity . 
Correct grinding greatly increases the service life of the drill bit .  But equally important ,  it also improves the performance of the entire drilling operation ,  especially straightness of the hole . 

3 A comprehensive range of various button bits shown as below