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| Categories | Concentric Drilling System | 
|---|---|
| Brand Name: | MING | 
| Model Number: | MRING219 | 
| Certification: | ISO9001 | 
| Place of Origin: | CHINA | 
| MOQ: | 1PC | 
| Price: | 999-99999USD/PC | 
| Payment Terms: | T/T, D/P, Western Union | 
| Supply Ability: | 2000PCS/MON | 
| Delivery Time: | 4-5WEEKS | 
| Packaging Details: | WOODEN CASE | 
| Machine type: | Drilling Tool | 
| Material: | High Manganese Steel,Tungsten Carbide and High Quality Alloy Steel | 
| Use: | Piling,Mining & water well drilling | 
| Processing type: | Forging | 
| Product name: | Concentric Casing System | 
| Application: | Quarry,Well Drilling | 
| Advantage: | High Performance | 
| casing pipe OD: | 219mm | 
| Pakage: | Wooden case | 
| Quality: | 90% quality similarity world top class brands | 
| Keyword: | Overburden | 
| Company Info. | 
| Wuhan Kingdrilling Diamond Co.,Ltd | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
Product Description:
This overburden drilling systems are designed are designed to use ring bit which is not connected to casing shoe, for piling.
Product components:
Pilot bit + outer ring bit + casing shoe
Production details:
| 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 | 
Order Guide:
Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style
RFQ:
What is drill casing?
Casing is a large diameter pipe that is assembled and inserted into a recently drilled section of a borehole. Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the wellstream.
How much PSI do I need for air tools?
between 70 and 90 PSI
Most air tools require between 70 and 90 PSI. Any light-to-medium-duty air compressor can easily handle 90 PSI, but you always want the compressor to supply more flow than needed. Pro Tip: Always respect a PSI rating. If you don't supply enough air volume, the tool won't operate correctly.



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