Coring bit with matrix height of prolongation

Coring bit with matrix height of prolongation

  • CN 101,652,532 A
  • Filed: 12/14/2007
  • Published: 02/17/2010
  • Est. Priority Date: 12/14/2006
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of ground drill bit comprises:

  • The drilling rod coupling part;

    AndThe cutting tip that comprises base layer, the matrix height of described base layer is greater than 1 inch and to about 6 inches.

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