Specifications
Coal mining roof bit -1.Reliable quality
2.Reasonable price
3.Long life and full model
4.Be certified by ISO9001
coal mining roof bits/coal bit
Applications: apply to the anchor-network support hole drilling in coal mine, hydraulic project. Etc.
Characteristics:
- High wear resistance and impact-resistance toughness.
- To repeat repair & greaning are not necessary, long drill life.
- High efficiency could be promoted sharply in penetration of high-medium hard rock formation.
- Labour intensity could be reduced.
- Rock formation to be suitable t:f=4-12
3 wings/ 2 wings
Product description:
The coal bits are mainly used in coal and mine drilling.
We can do different measures according to customer’s requirements.
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 | |
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