Core barrel is one of rock drilling tools especially used for cutting annular ring in rock, concrete and in steel reinforced concrete . Connecting the Kelly bar by Kelly box, the core barrel can drill in hard rock and cutting through the fissured rock.

Roller bit Core Barrel is the core barrel that equipped with roller bits on its cutting ring and can drill in stratification with hardness more than100mpa.

1.  Cutting rings with rock drilling bits and releases the internal stress of rock.  

2.  Cutting with the method of rolling and squeezing can increase the anti-wear ability of the barrel. 

3. Small barrel facilitates the coring operation, large barrel performs stage breaking.  

4. The barrel design incorporates spiral wear-resistant strips to prevent abrasion and extend the lifespan of the barrel

5. Suit with the medium or slightly weathered rock, hard or superhard bedrock.