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Coal&Mining Drilling Tools
Coal&Mining Drilling Tools

           
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





                            

Colliery Drilling Tools
Main Standard(mm)
D
M
 
38
12
40
12
42
12





         

Colliery Drilling Tools
Main Standard(mm)
D
B
d
H
Hex joint
27
26
24
57
41
22
32
67

   








 

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