530mm MRING Overburden Casing Drilling System Hole Opener Bits for Stone Drilling with 508mm Casing OD
Price:
999-99999USD/PC
MOQ:
1PC
Delivery Time:
3-5WEEKS
Brand:
MING
Product Description
530mm MRING Overburden Casing Drilling System
Professional overburden casing drilling tools designed for efficient stone drilling operations with enhanced durability and performance.
Product Overview
The MRING Overburden Casing Drilling System features permanent ring bit technology that delivers superior lifespan compared to conventional Mring bits. This concentric drilling system with retrievable pilot bits operates effectively in any direction and ground condition.
System Components
- Pilot bits with large internal flushing holes and external flushing grooves
- Symmetrical ring bit (reamer) with internal bayonet coupling
- Casing shoe for driving of casing
- Compatible with common DTH hammer shanks
Technical Specifications
| Model | External Dia. (mm) | Casing Dia. (OD*ID) | Spline |
|---|---|---|---|
| MK-MRING90 | 125 | 114*102 | MACH33, DHD3.5 |
| MK-MRING115 | 155 | 139*127 | DHD340, SD4, QL4 |
| MK-MRING140 | 188 | 168*153 | DHD350, SD5, QL5 |
| MK-MRING165 | 215 | 194*181 | DHD360, SD6, QL6 |
| MK-MRING190 | 238 | 219*206 | DHD360, SD6, QL6 |
| MK-MRING215 | 276 | 254*240 | DHD380, SD8, QL8 |
| MK-MRING235 | 293 | 273*254 | DHD380, SD8, QL8 |
| MK-MRING240 | 293 | 273*260 | DHD380, SD8, QL8 |
| MK-MRING280 | 345 | 323*303 | SD10 |
| MK-MRING315 | 375 | 355*335 | SD10 |
| MK-MRING365 | 432 | 406*387 | N120, N125, SD12 |
| MK-MRING460 | 530 | 508*483 | N125, N180 |
| MK-MRING510 | 580 | 559*533 | N180 |
| MK-MRING560 | 635 | 610*584 | N180 |
| MK-MRING610 | 695 | 660*632 | N240 |
| MK-MRING660 | 735 | 711*685 | N240 |
| MK-MRING710 | 785 | 762*736 | N240 |
| MK-MRING745 | 838 | 813*780 | N240 |
| MK-MRING810 | 886 | 864*838 | N240, N240S |
| MK-MRING860 | 935 | 914*884 | N240S |
| MK-MRING910 | 980 | 965*935 | N240S |
| MK-MRING960 | 1038 | 1016*986 | N240S, M330 |
| MK-MRING1010 | 1090 | 1067*1041 | M330 |
Ordering Information
To place an order, please provide: Casing Tube OD & ID + Ring Bit Diameter + Hammer Shank + Maximal Normal Bit Diameter + Casings and Casing Shoes Installation Method (if by threads, threads standard must be offered)
Key Advantages
- Increased perpendicularity and penetration rates
- Reduced torque requirements
- Handles oblique, straight, and angled holes
- Minimal environmental impact
- Premium materials: Timken steel and German tungsten carbide (YK05, T6)
- Advanced manufacturing with electron-hydraulic forging and multipurpose furnace heat treatment
- 40+ years engineering expertise with 100% quality inspection
Product Images
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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