133mm MRING Overburden Casing Drilling System Bit for Rock Foundation with 114-1067mm Casing Range
The MRING Overburden Casing Drilling System delivers exceptional performance for demanding drilling applications. Engineered for precision and efficiency, this system saves time and effort while ensuring accurate results in challenging geological conditions.
The complete drilling system consists of three key components working together:
- Pilot Bit - For initial penetration and guidance
- Ring Bit - Core cutting component for overburden materials
- Casing Shoe - Protects and guides the casing during installation
| Model | External Diameter (mm) | Casing Diameter (OD*ID) | Spline Type |
|---|---|---|---|
| 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 dimensions
- Ring Bit Diameter requirement
- Hammer Shank type
- Maximal Normal Bit Diameter
- Casings and Casing Shoes Installation Method (including thread standards if applicable)
- Enhanced penetration rate and perpendicularity control
- Versatile performance in straight, oblique, and angled holes
- Premium materials: TIMKIN Steel with German Element Six tungsten carbide (YK05, T6)
- Advanced manufacturing using electron-hydraulic forging and multipurpose furnace heat treatment
- 40+ years of engineering expertise with 100% quality inspection
Pneumatic down-the-hole (DTH) hammer is a drilling tool powered by compressed air, designed for efficient operation in pebble, gravel, and hard rock strata. Widely used in building pile foundation construction, bridge projects, mining operations, geological exploration, and hydrological well drilling.
Overburden soil refers to unprocessed fill material that may contain various components including sand, rocks, clay, and stones. This material typically lacks the organic content and nutrients found in topsoil layers.
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