Impregnated Diamond Core Bit Drill Bits[Mining Exploration Coring Drilling]

SIZE 
Single-tube Series: 36, 46, 56, 59, 75/77, 91/93, 110/112,131,151,172,198,222,252,277,305 
Double-tube Series: 36,46,56,59,66,75/77,91/94,110/114,130 
Wire-line Series:  46,56,59/BQ,75/NQ,77,95/HQ,114/PQ 

We can customize bits according your demands and the hardness of applied rock or underground state. Lip shape of bit is divided into circular,flat-bottom,ladder teeth,serration,gear,end spray and so on. 

The hardness of Matrix is the most important factor in selecting bits. 
1.Large size diamond with the strong matrix is used for soft rocks. 
2.Medium size diamond with the matrix of medium strength is used for the rocks of medium strength. 
3.Small size diamond with soft matrix is used for strong rocks.