Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News
Beijing Jincheng Mining Technology Co., Ltd.
Home ProductsDTH Drilling Tools

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling

JCdrill---The best and Specilized "one-stop selection sourcing platform“ for drilling rig and tools. —— Orlan

—— Orlan

The trailer water drilling rig TWD200 is really good borehole machine,beasy operation,high efficiency and good price. —— Кочетков Юрий

—— Кочетков Юрий

The hydraulic rotary water well drilling rig JKS300,JKCS400 drilling by DTH hammer and mud pump,very good quality and considerate after sales service!

—— Mr. Mohammed Seif

We start use the JK580 DTH rock drilling rig since 2009,now we have 6set working in our customer's mining site,perfect machine with reasonable price.

—— Gocha Rostiashvili

I'm Online Chat Now

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling
Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling

Large Image :  Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling

Product Details:
Place of Origin: China (Mainland)
Brand Name: JCDRILL
Certification: ISO9001,CE
Model Number: All Models
Payment & Shipping Terms:
Minimum Order Quantity: 5pcs
Price: $15.00 - $50.00/pc
Packaging Details: Wooden box
Delivery Time: 3-15 work days
Payment Terms: L/C, T/T, Western Union, D/A, D/P, MoneyGram
Supply Ability: 100000pcs/year
Detailed Product Description
Parts Name: Over Burden Bits Brand: JCDRILL
Color: Customized Factory Visit: Support
Sample Order: Support Usage: Hole Drlling
High Light:

dth drill bits

,

down the hole hammer bits

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling

 

JCDRILL DTH Over Burden Concentric Bits
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

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 0

Parametre

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 1

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 2

Usage

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 3

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 4

 

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

Certification

Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 5
Delivery
Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 6
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.
Hard Rock DTH Drilling Tools Concentric Overburden Casing Bit Hole Drlling 7
 

Contact Details
Beijing Jincheng Mining Technology Co., Ltd.

Contact Person: Sekura Yu

Tel: +8613811398425

Send your inquiry directly to us (0 / 3000)