Geothermal Well Casing Tube Overburden Casing Drilling System Drill Eccentric Bit

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Manufacturing Process: Forging
• Material: Carbon Steel
• Hole Dia.: 238mm
• Model NO.: MK-MEC190
• Weight: 108kg
• Length: 690mm
• Spline: DHD360, SD6, Ql6
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year

Product Description

 

Geothermal Well Casing Tube Overburden Casing Drilling System Drill Eccentric Bit

Product Description

Down the hole (DTH) tools manufacturer KINGDRILLING Head Eccentric Casing drilling system is made up of a pair of chain embedded to guide apparatus, and ensure the bit is not contacting and damaging the retaining ring when it is rotating. When rotated clockwise, eccentric part will be expanded to bring the casing tube into hole. After completing, eccentric bit will be closed while rotated anticlockwise, and it can be lifted up by the drilling machine. This type is especially suitable for 114-273mm in diameter.

Technical Date

Model	Hole dia(mm)	Weight (KG)	Closed dia.(mm)	Pilot dia.(mm)	Length(mm)	Case dia.(OD*ID)	Spline
MK-MEC90	125	16	90	100	360	114*102	MACH33,DHD3.5
MK-MEC115	155	30	115	125	510	139*127	DHD340,SD4.QL4
MK-MEC140	188	52	140	151	570	168*153	DHD350,SD5,QL5
MK-MEC165	215	95	166	178	690	194*181	DHD360,SD6,QL6
MK-MEC190	238	108	190	203	690	219*206	DHD360,SD6,QL6
MK-MEC215	276	140	215	236	720	254*240	DHD380,SD8,QL8
MK-MEC235	293	160	236	251	730	273*254	DHD380,SD8,QL8
MK-MEC240	293	168	241	256	730	273*260	DHD380,SD8,QL8

Working principle:

1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit's upper shoulder engages the shoulder of the casing shoe. 
2. Hammer's percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing. 
3. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved 
4. Drilling continues to the desired depth in the bedrock using a conventional drilling.
 

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.

 

Our Service

 

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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