MRING Concentric Casing Drilling System 146mm with DHD340 Hammer for Overburden Drilling
Kingdrilling MRING Concentric Casing System features advanced down-hole hammer drill bits for efficient overburden drilling. This 146mm system with DHD340 hammer provides enhanced penetration, superior perpendicularity, and handles straight, oblique, and angled holes. Manufactured with TIMKIN Steel and German tungsten carbide, backed by 40+ years of engineering expertise and 100% quality inspection.
The Kingdrilling MRING Concentric Casing System is an advanced down-hole hammer drill bit system specifically designed for efficient drilling through overburden with casing. This single-use symmetric casing drilling system combines pilot bit, ring bit, and casing shoe components for optimal performance.
Product Model: 146 MM MRING Single-Use Symmetric Casing Drilling System
Matched Hammer: DHD340
Casing Pipe OD: 146mm
The complete MRING Concentric Casing Drilling Bit system consists of three main components:
- Pilot Bit
- Ring Bit
- Casing Shoe
| 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 |
To place an order, please provide the following specifications:
- Casing Tube OD & ID
- Ring Bit Diameter
- Hammer Shank Type
- Maximal Normal Bit Diameter
- Casings and Casing Shoes Installation Method (thread standard if applicable)
Custom MRING system sizes are available upon customer request.
- Enhanced penetration rate and superior perpendicularity control
- Versatile application for straight, oblique, and angled holes
- Premium materials: TIMKIN Steel with YK05, T6 tungsten carbide from Element Six in Germany
- Advanced manufacturing using electron-hydraulic forging hammer technology
- Precision heat treatment in multipurpose furnaces
- 40+ years of engineering expertise ensuring quality with 100% inspection
Recommended Products
Video
Video