High Quality Pdc Anchor Drill Bits Coal Mining Drill Bits
Advantage:
1.coal mining tool,coal mine drill bit
2.low price and supreme quality
3.manufacturer
4.Certified by ISO9001
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
Colliery Drilling Tools | Main Standard(mm) | |||
D | H | L | M | |
Thread joint | 27 | 44 | 17 | M14×1.5 |
27 | 54 | 17 | M12×1.75 | |
28 | 54 | 20 | M12×1.75 | |
29 | 52 | 18 | M14×1.5 | |
30 | 50 | 18 | M14×1.5 | |
32 | 52 | 22 | M14×1.5 | |
32 | 56 | 22 | M12×1.75 |