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Brand Name : MING
Model Number : MRING813-N240
Certification : ISO9001
Place of Origin : CHINA
MOQ : 1PC
Price : 999-99999USD/PC
Payment Terms : T/T, D/P, Western Union
Supply Ability : 2000PCS/MONTH
Delivery Time : 3-5WEEKS
Packaging Details : WOODEN CASE
Material : High Manganese Steel,Carbide
Use : Ore Mining,Mining & water well drilling,Quarry or mining or well drilling
Type : Symmetrix Casing,Odex overburden system
Machine type : Drilling Equipment
Processing type : Forging
Product name : Concentric Casing System
Color : Gold,Request,Yellow,Red
Application : water well drilling,mining or welling drilling
Usage : Hole Drilling
Advantage : High Performance,High-efficiency,Widely used hard rocks and have good penetration
Name : ODEX System (eccentric Overburden System)
Hammer type : Overburden drilling system
Button shape : Spherical/Ballistic/Parabolic/Sharp/Flat
Advantages : High performance,High quality and factory prices
Product name: 813mm MRING symmetric casing drilling tools for Civil engineering
Product category: symmetric casing drilling tools
Matched hammer: Hammer N240
Matched casing pipe OD: 813mm
MRING symmetric casing drilling tools Advantages
1. Straight Holes and Fast Penetration Rate
 2. Less Torque in all ground conditions
 3. Easy System to lock and Unlock Ring
 4. Drilling at any angle required
 5. More Holes and Low investment
MRING symmetric casing drilling tools technical parameters:
| 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)
Other size of MRING system is available upon customer's request
FAQ:
1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
2. How about the common packing?
A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.
3. What is hole hammer?
Pneumatic down-the-hole (DTH) hammer is a pneumatic drilling tool using compressed air as a power source. It is suitable for drilling in pebble, gravel, and hard rock strata. It is often used in building pile foundation construction, bridge, mining, geological exploration, hydrological wells, and other fields.
4. What is overburden fill?
Overburden Soil is a general, unprocessed, fill material that can contain a variety of different materials, depending on where it is sourced. Overburden Soil can contain sand, rocks, clay and stones, and will typically lack the organic material and nutrients found in topsoil.
5. How far can you directional bore?
 What are the minimum and maximum lengths of crossing? Maximum lengths and hole diameters are determined by project specific geotechnical conditions however effective outside range for heavy rig horizontal directional drilling is 3,000 m
More information:



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