Overburden Concentric System Casing Ring Cross Rock Drill Bit Mk-Mring90

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Manufacturing Process: Forging
• Material: Carbon Steel
• External Dia.: 125mm
• Model NO.: MK-MRING90
• Casing Dia.: 114*102
• Spline: Mach33, DHD 3.5
• Can It Be Customized?: Yes.
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year

Product Description

Overburden Concentric System Casing Ring Cross Rock Drill Bit MK-MRING90

Product Description

Rock drilling tools factory KINGDRILLING professionally produce Ring wing bit concentric drilling systems by down the hole hammer which are designed to drill and case a hole simultaneously through unstable ground conditions.

A driver bit and a ring are assembled to a complete RING system bit which is suitable for 114-1067mm diameter casing tube.

Working principle:

1. When drilling starts , the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly 
2. When the required depth is reached , rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing. 
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent. 
4. Drilling continues to the desired depth in the bedrock using a conventional drilling. 

 

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 connection (if by threads, threads standard must be offered)

 

Product Application

Company Profile

KINGDRILLING Diamond CO., LTD is one of the most professional private enterprise specialized in researching and producing Concentric casing drilling bit, Eccentric drilling system, DTH hammer, down the hole bit, thread drill bits, taper drill bits, Anchor, coal mining tools and so on.
Kingdrilling Taper drilling bits are mainly equipped on rock drilling equipment, well drilling equipment and oil field equipment. They are widely used for rock drilling, blasting holes and other drill works in quarries, coal mines, rod and dam constructions and other similar projects.

Transport

FAQ

1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.

2. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for a better understanding.

3. How to control quality?
A: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.

4. Shipping way.
Sample order: We suggest Courier express like DHL/UPS/FEDEX or by air/by train.
Bulk order: We suggest by air or by sea.

5. After Services.
1. Our sales team will response for your question within 24 hours (Holidays Excluded)
2. Technical Support will be available in any time.

Packaging & Shipping

Packed by Carton or Wooden cases.
Delivery:

1. Goods in stock can be delivered within 5 days.
2. DTH Bits production time is about 15 days.
3. DTH Hammer product time is about 30 days.

Transprotation: By air, By Express or By sea / By train , according to your requests.

 

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