If you are looking for China tungsten-carbide drill bit with patented technologies and high quality tungsten-carbide drill bit for sale in China from professional tungsten-carbide drill bit supplier and factory, please feel free to contact Rejee Industry.
Suitable for special drilling operation in soft to medium soft formations(f=1-5).
Tungsten-carbide drill bits have a simple structure with low operation cost and high drilling efficiency.
Ordinary steel bits: ɸ75,ɸ94,ɸ113,ɸ113,ɸ153
Plug-in type of casted steel spiral bits:ɸ75-ɸ150 (For special drilling operation of gas drainage boreholes in the coal seam)
Large diameter bit for rescue: ɸ300,ɸ450,ɸ600(Specially for across roadway and rescue borehole drilling operations)