Customization: | Available |
---|---|
Customized: | Customized |
Standard: | API |
Suppliers with verified business licenses
Audited by an independent third-party inspection agency
IADC
|
Roller Cone (m/h)
|
Formation Hardness
|
Rock Type
|
Compress Strength
|
|
WEM
|
OBM
|
||||
111/124
|
15-30
|
18-33
|
Very soft
|
Clay, silts, sands
|
less than 25mpa
|
116/137/437
|
9-15
|
12-18
|
Soft
|
Claystone, marl, lignite, sandstone, tuff
|
25-50mpa
|
136/137/517/527
|
4.5-9
|
6-12
|
Medium soft
|
Claystone, marl, lignite, sandstone, silts, anhydrites, tuff
|
50-75mpa
|
211/217/517/537
|
2.5-6
|
3-6
|
Medium
|
Mudstone, limestone, anhydrites, sandstone (calcareous)
|
75-100mpa
|
211/236/537/617
|
1.5-2.5
|
1.5-3
|
Medium hard
|
Limestone, anhydrites, dolomite
|
100-120mpa
|
311/347/627/637
|
1-1.5
|
1-1.5
|
Hard
|
Shale (calcareous), sandstone (siliceous), siltstone
|
100-200mpa
|
637/737/837
|
1
|
1
|
Very hard
|
Quartzite, lgneous rocks
|
more than 200mpa
|
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
1. Who are we?
We are based in Qingzhou city Shandong province China, exported drilling equipment and accessories for 12+ years.
2. How can we guarantee quality?