Kingdrilling Concentric Casing System Ring Bit is the latest new and simple product line designed and manufactured by Kingdrilling for drilling through overburden with casing.

MRING Concentric casing drilling bit components:

Pilot bit + ring bit + casing shoe

MRING Concentric casing drilling bit 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

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

MRING Concentric casing drilling bit Advantage:

1. Enhance penetration and perpendicularity

2. Deal with straight, oblique hole and other angle holes

3. Material: TIMKIN Steel. Tungsten carbide: YK05, T6 from Element Six in Germany

4. Kingdrilling DTH tools are forged by advanced electron-hydraulic forging hammer, and harness process is managed by multipurpose furnace heat treatment.

5.Quality: More than 40 Years engineer to make sure the quality, 100% inspection

Products Manufacturing:

Product Tags:

ryobi sds hammer drill

rotary drilling bit

makita rotary hammer drill

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