Description of PDC Roof Bolt 25-42mm Coal Mine Drill Bit

- Jun 06, 2017-

Features
1. The wings are higher wear resistance and impact toughness; 
2. To repeat repair and grind are not necessary;
3. Long life drill;
4. Drilling efficiency could be promoted sharply in penetration of high –medium hard rock formation and labor intensity could be reduced.


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Range of Applications

1. Blast hole drilling

2. Exploration drilling

3. Water injection drilling

4. Gas detection and drainage

5. Water detection and drainage

6. Roof and side drilling and bolting

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If you are interested,contact us freely:zlongmay@yahoo.com