28mm 42mm 43mm coal bit

Specifications

1.tungsten carbide drill bit,coal mine drill bit
2.low price and supreme quality
3.manufacturer
4.Certified by ISO9001

 28mm 42mm 43mm coal bit  

Product Description:
Applications:

 Apply to the anchor-network support hole drilling in coal mine, hydraulic project. Etc.
Characteristics:
1. High wear resistance and impact-resistance toughness.
2. To repeat repair & greaning are not necessary, long drill life.
3. High efficiency could be promoted sharply in penetration of high-medium hard rock formation.
4. Labour intensity could be reduced.
5. Rock formation to be suitable t: F=4-12

We can manufacture all kinds of bits and shells according to customer's special requirement.

Any requirement please contact us, we'll do the best service for you. Hope we can establish a good business relationship