| Customization: | Available |
|---|---|
| Customized: | Customized |
| Length: | Request |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Premium Drilling Tools Concentric Overburden Casing Systems
Overburden drilling systems are widely used in a variety of applications from well drilling and minipilling to rock anchoring and site investigation.
This is easily removed to allow for bit are sharpening or replacement. It is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole.
|
Model
|
Outer Dia. of Casing Tube(mm)
|
Inner Dia. of Casing Tube(mm)
|
Wall thickness of casing(mm)
|
Guide device Max. Outer Dia(mm)
|
Reamed Dia(mm)
|
Max. Outer Dia. of Normal Bit
|
|
GL360-219
|
219
|
119
|
10
|
197
|
234
|
185
|
|
GL380-245
|
245
|
225
|
10
|
222
|
260
|
210
|
|
GL380-273
|
273
|
253
|
10
|
251
|
305
|
240
|
|
GL380-325
|
325
|
305
|
10
|
302
|
350
|
282
|
|
GL112-355
|
355
|
325
|
10
|
322
|
380
|
305
|
|
GL112-406
|
406
|
382
|
12
|
380
|
432
|
365
|
1. Deal with straight, oblique hole and other angle holes
2. Hardening treatment of the part's surface:with longer operating life and excellent anti-wear properties
3. High grade tungsten carbide inserts
-Middle-low/high air pressure DTH hammers & bits
-Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling.
-Eccentric overburden drilling system
-Hole opener bit
-Shank adapter, coupling sleeves and all kinds of adapters
){kind=link}