Description

Good quality civil engineering step shank drill bit


Techgong can supply all kinds of round shank bits, such as B16, B43HDK12, B40HDK12, B47K19H, B47K22H, B47K12/60, B47K19/, etc.

We also can make all kinds of conical picks  according to your drawings or samples.

  
They are widely used in foundation drilling, rotary drilling, trenching, tunneling, mining, etc.

Our products are in high quality, reasonable price and long service time.

They have been exported to Australia, Brazil, Canada, Japan, USA, Korea, Middle East, etc


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