Twin wing coal bits/ Carbide 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
|
|