Mining rock drill bits tungsten carbide insert 6 3/4'' three cone roller bits with API 7-1 Certification

Price: 1100.0 USD
Payment Terms: T/T,L/C
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Basic Info.
  • Application: Oil 
  • Type: Drilling Rig 
  • Brand Name: GREAT 
  • Size: 6 3/4'' 
  • Color: Blue or as your order 
  • Formation: Soft Formation 
  • IADC code: MD517X 
  • Application: construction, geothermal,oil well drilling ,water well drilling 
  • WOB(KN/mm): 0.35-1.0 
  • RPM(r/min): 220-60 
  • Connection: 3 1/2'' API REG 
  • Model No.: Customized 
  • Place of Origin: Hebei  
  • Min.Order: 20 Piece/Pieces
  • Means of Transport: Ocean, Air
Supply Capacity
  • Production Capacity: 10000pieces/year
  • Packing:wooden case or as your requirment
  • Delivery Date: According to the quantity

Top Quality Tricone carbide drill bits 6 3/4'' TCI IADC MD517X  used for Soft formation oil well drilling

Product Description


Great Drill Bits Manufacture PDC bits ,but also supply all kinds of Tricone bits include TCI bits ,Steel tooth bits ; 


TCI tricone bits series: 

Soft formation TCI tricone bits:

The soft formation TCI tricone bits are used to drill low compressive strength, very soft formations.

This bit maximized to use of both conical and chisel tungsten carbide inserts of large diameters and

high projection. This cutting structure design, combined with maximum cone offset, results in high bit

penetration rates. The deep intermesh of cutter rows prevents bit bailing in sticky formations. 

Medium formation TCI tricone bits:
The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the

heel rows and inner rows. This design provides a fast drilling rate and added cutting structure

durability in medium to medium hard for mations. The HSN rubber O-ring provides adequate

sealing for bearing durability. 

Hard formation TCI tricone bits:
The hard formation TCI tricone bits can be used to drill hard and abrasive formations.

Wear resistance tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge.

Maximum numbers of hemispherical shaped inserts are used in all rows to provide cutter durability

and long life. 

Medium hard formation TCI tricone bits: 
The medium hard formation TCI tricone bits features robust chisel tungsten carbide inserts on the

heel row and conical on the inner rows. This design provides a fast drilling rate and added cutting

structure durability in medium to medium hard formations. The HSN rubber O-ring provides adequate

sealing for bearing durability. 


Steel tooth bits series:

Soft formation tooth bits:

The soft formations tooth bits are used to drill low compressive strength, soft formations. Long projection

tooth lengths are used on high offset cones to provide the greatest penetrations rates possible. Wear

resistance hard facing is used to control tooth wear. On the softest bit types this hard facing completely

covers the bit teeth.


Medium hard formations tooth bits:

The medium hard formation tooth bits are used to drill high compressive strength, medium hard formations.

Shoot projection teeth with reduced crest length are used in this series of bit designs.

Durable hard facing is applied to reduce tooth wear.







116 117 12 6127 136 137 216 217 226 226 316 317

326 327 336 337 115 125 135 215 225 235 315 325

335 114 124 214 314 111 121 131 346 347

417 427 437 517 527 537 617 627 637 737 837 832

415 425 435 445 525 625 635 416 427 436 446 447

516 526  537 547 516 536  535

available sizes

From 2 7/8" to 26"

larger sizes for hole opener bit ,reamer bit


most favourable price and best qualtity

bearing type

sealed bearing and non-sealed bearing

HJ(metal sealed journal bearing)  

HA (rubber sealed journal bearing

aircooled bearing type

Formation or layer

soft ,medium soft ,hard,medium hard,very hard formation

Button size (extra features)

Button bit,saw teeth

1)Y-Conical teeth

2) X-chisel teeth

3)K- wide teeth

4)G- Gague protection


Alloy steel ,carbide


Wooden case or steel case

Payment terms

T/T,L/C,Western union

Delivery terms

By sea or by air

Delivery time

Within 3 to 7 days


Canada, USA,Middle east ,Africa,Europe


Company Information

Cangzhou Great Drill Bits Co., Ltd. was established in 1998, which specializes in PDC bits development, designed sales. It is one of the biggest PDC drill bit manufacturing companies in Asia and is qualified as supplier for CNPC, Sinopec and CNOOC.

 Cangzhou Great is located in Jizhong Plain which is the heartland of North China oil fields, east of Victory oilfield, west of Changqing oilfield, south of Zhongyuan oilfield. The company, with modern plants and advanced production equipment, has the capability to produce more than 10000 of the drill bits from size 3" ~ 26".

Advantage 1:Our raw material are well-know domestic and foreign enterprises,transported to company and then into the sophisticated testing of technical personnel,strict quality control (photo of all mobile phone real shot)

Advantage 2:We have a team of design engineers with years experience in design and field engineering experience.We have a unique and advanced design concept for the design of the drill.We have more than one highly mechatronics machining center,CNC machine tools,automatic temperature control microcomputer sintering furnace and other production equipment,and ultrasonic flaw detector mechanical testing machine,super-hard material impact testing machine,abrasion testing machine and other quality testing equipment,from raw material to finished product for a full continuous quality control.

Advantage 3:We have more than ten years experience in supplying professional solutions onshore and offshore,and try our best to create the level of added value for our customers.We have passed ISO9001:2008,ISO14001:2004 and OHSASI18001:2007 qualifications,and have certificates issued by NGV and CCBQ.Products comply with API Spec.7-1 and API Spec.7-2.We have a number of patent certifications on the drill bit. 

Related products

      We have many series of rock bits, quality grades are different, and prices are different. We believe, the proper tools with higher cost-performance is the most important. For example, our top quality rock bits is not cost-effective for water well driling, as the water well drilling machine can not drive the super rock bit to perform their best. But for very deep well drilling, high quality grades rock bits is cost effective even its price is much higher.
So it is better tell us as more as possible the details of projects, then we provide the proper solutions and offer, usually 2 or 3 solutions will be provided for options.


Packaging & Shipping


Our partner


Our Exhibitions



What Great Drill Bits Can offer ?

1 .Are you trading company or manufacturer ?
 We are manufacturer.

2. Whether accept customized according to customers' requirements ?

Yes, We accept customized, no matter what size and type ,and MOQ is 1 piece .

3. About lead time and shipping time?

The lead time depend on quantity of order. Usually it will takes 3-5days shipping to Tianjin Port or Beijing Airport,China .Even the small order or urgent order we can send you by air after received your agreement.

According the distance from china to your port, usually from China to European about 25-30 days. To West of American 20-25 days.

4. It is produced according to the standard?

Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request,we had strictly inspection in the production.  Exported to the Middle East, Europe, North America, South America, Australia and other countries and regions.

5. Can I expect a quality product?

 Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature    production technology ensuring the quality satisfy international request.

6 .How do you guaranteen your quality?
 We select the advanced production technology and equipments,strictly control the whole production process,and we inspected  the finsihed drill bits,we also appreciate customer's feedback and make positive response.

Our Services

Dear All Customers,

We here sincerely invite you to place a trial order online here from

to see our excellent quality and service, cause we now using the Trade

assurance as above to offer you a guarantee.

i) If the quality of products we offered to you is not good enough, you can complain here online to for a full amount back guarantee.

ii) If the lead time is over the contract, you can also apply for full amount back guarantee from

iii) If our service is not cater to you, you can leave bad comments online to let others known.

v) All your infomation is strictly secret online, never a third party will see your name, contacts, company name, etc. Only the country, your comments and the about amount from you will show as trade accord.


vi) If you need TPI service such as BV, there would be a discount charge for you if you use online service.


Wish above information will eliminate your hesitation cause of untrust to us.
If you still have some question, please contact us. 

Send message to this supplier
Mr. Jem
Tel: 86-317-3213789
Mobile: 17333753353
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Cangzhou Great Drill bits Co,.ltd
No.2,jianshe North Street,Yingzhou Economic Development Zone, Cangzhou, Hebei, China (Mainland)
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