Product Details:
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| Name: | Concentric Overburden Bits | Length: | As Required |
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| Factory Visit: | Support | Trial Order: | Support |
| Color: | Blue ,black,customized | Package: | Wooden Box |
| High Light: | down the hole drilling tools,down the hole drill bits |
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Concentric Overburden DTH Drilling Tools Eccentric Reamer Drill Bits For Hard Rock
Description
The eccentric reamer drill is an overburden drilling system designed for conditions where a cased hole is required. Collapsing holes tend to make overburden drilling expensive, with lost drilling equipment and down time.
The eccentric designed bit rotates outward and drills a larger diameter hole than the casing, avoiding cave-ins, wash-outs, and other problems common in normal drilling operations in soft and gravel-type strata or loose rock. Since 90% of the world's overburden drilling is in loose strata, potential utilization is enormous.
After reaching the designated depth, the reamer-bit is retracted by reversing the direction of the rotation and by applying tension on the reamer-bit, which has a taper and will retract into the casing for easy removal of the entire drill-string. This leaves the casing in place for other applications or for removal at a later date. The method is designed for use with flush joint threaded pipe or welded-type casing and provides a bit size for a wide variety of different casing wall thicknesses.
Application
Parametre
Usage
| Minimum Order Quantity: | N/A |
| Price: | |
| Packaging Details: | Standard Export Delivery Package |
| Delivery Time: | 7days |
| Payment Terms: | T/T |
| Supply Ability: | Based on Detailed Order |
FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
3. How can we trust your company?
We support Alibaba trade insurance. Protect products quality, shipment on time and your covered amount.
4. Other Questions?
Please add me on whatsapp or wechat by:+86 13521157051 or send inquiry to sales3@rockdrillingrig.com.
Contact Person: Mr. Jack Cheng
Tel: +8613811934576
Fax: 86-10-57159802
