Complex Layer Overburden Concentric Casing Drill Bit 146mm with DHD340 Hammer Compatibility for Construction Drilling
Price:
999-99999USD/PC
MOQ:
1PC
Delivery Time:
3-5WEEKS
Brand:
MING
Product Description
Complex Layer Overburden Concentric Casing Drill Bit
Product Overview
Professional 146mm concentric casing drilling bit designed for complex geological formations in construction applications. Compatible with DHD340 hammer systems and 146mm outer diameter casing pipes.
Key Features
- Surface hardening treatment for extended operational lifespan and superior anti-wear properties
- Optimized structural design for enhanced strength and ease of operation
- Stable and reliable performance with high drilling speed capabilities
Technical Specifications
| Model | Reaming Diameter (mm) | Casing Diameter (mm) | Equipped Hammer |
|---|---|---|---|
| NMK5E108 | 115 | 93-99 | 90 |
| NMK5E127 | 130 | 115-117 | 110 |
| NMK5E146 | 155 | 130-134 | 110/340 |
| NMK5E168 | 185 | 148-156 | 110/340 |
| NMK5E178 | 195 | 158-166 | 150/340 |
| NMK5E183 | 196 | 168-176 | 350/360 |
| NMK5E193 | 206 | 176-182 | 360 |
| NMK5E219 | 236 | 199-207 | 360 |
Ordering Information
Order Guide: Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style
Additional NMK system sizes available upon customer request for custom applications.
Frequently Asked Questions
What is drill casing?
Casing is large diameter pipe assembled and inserted into drilled boreholes to protect and support the wellstream, similar to spinal bones protecting the spinal cord.
What is hole hammer?
Pneumatic down-the-hole (DTH) hammer uses compressed air as power source for drilling in pebble, gravel, and hard rock strata. Commonly used in building foundations, bridges, mining, and geological exploration.
What is overburden fill?
Overburden soil is unprocessed fill material containing sand, rocks, clay and stones, typically lacking organic material found in topsoil.
Why is overburden important?
In petroleum systems, overburden rock overlies source rock and contributes to thermal maturation through higher temperatures at greater depths.
How far can you directional bore?
Maximum lengths and hole diameters depend on geotechnical conditions, with effective range for heavy rig horizontal directional drilling up to 3,000 meters.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Wuhan Kingdrilling Diamond Co.,Ltd
Location
1-2-905 California Sunshine, Optical Valley Street,Wuhan 430074, China
Contact Person
Wendy Chen