

Add to Cart
Product name: 530mm MRING Overburden Casing Drilling System Hole Opener Bits For Stone Drilling
Product category: Overburden casing drilling tools
Kingdrilling diamond CO., LTD is one of the most professional private enterprise specialized in researching and producing casing drilling system, down the hole(DTH) hammer, down the hole bit, thread drill bits, taper drill bits, Anchor, coal mining tools and so on.
Mring Overburden Casing Drilling System bit, the ultimate tool for drilling with efficiency and longevity. Our product boasts a longer lifespan compared to conventional Mring bits, ensuring you'll get the most out of your investment.
permanent ring bit casing drilling bits feature:
Permanent ring bit system is a concentric drilling system with retrievable pilot bits.
This system drills in any direction and in any type of ground condition.
The Symmetric components are made up of:
--- A 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.
The Pilot bits is attached to any common DTH hammer shank.
MRING Overburden Casing Drilling System Technical Date:
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 |
How to order:
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)
Permanent ring bit casing drilling bits advantages:
1. Increase perpendicularity and penetration
2. Lower the amount of torque needed
3. Handle oblique, straight, and other angled holes
4. Minimal impact on the surroundings
5. Material: Steel from Timken. Tungsten carbide: Element Six in
Germany sells YK05 and T6.
6. A multipurpose furnace heat treatment system controls the
harness process as an innovative electron-hydraulic forging hammer
forges the kingdrilling DTH tools.
7. Caliber: Over 40 years of experience as an engineer to ensure
quality and 100% inspection
More information: