Shandong, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Construction & Decoration, Electrical & Electronics, Industrial Equipment & Components, ...
OEM/ODM Service
Sample Available

Core Bits, Petroleum Bits, Matrix Body Bits manufacturer / supplier in China, offering Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling, Diesel Water Pump Chinese Supplier for Irrigation/Mine Dewatering/Fire Fighting/Marine Use, Best-Selling Diesel Water Pump for Irrigation/Mine Dewatering/Fire Fighting/Marine Use and so on.

Diamond Member Since 2017
Audited Supplier

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Min. Order / Reference FOB Price
1 Piece US $1,000-1,600/ Piece
Port: Tianjin, China
Production Capacity: 10000PCS/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Manufacturing Process: Forging
Surface Treatment: Spray-Paint
Operation Pressure: Atmospheric Pressure
Material: Tungsten Carbide Insert
Tricone Bit Application: Oil,Gas,Geothermy,Water Well,HDD,Mining,Foundation
Certificate: API ISO

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Basic Info.

Model NO.
12 1/4" Inch (311 mm)
Machine Type
Drilling Tools or Drilling Equipments
Durable and Cost Effective
Processing Type
Casting or Forging
New or Used
Brand New
Tricone Bit Formation
Soft, Medium Soft, Hard, Medium Hard, Very Hard
Diamond Core Bits Material
Carbide Steel
Size of Cutter
13 -16 mm
USA, Candan,Australia.South Asia ...
Mud Circulation/Air Circulation
Nozzles Quantity
4 Nozzles 5 Nozzles 6 Nozzles 7 Nozzles 8 Nozzles
Warranty Term
3-5 Years
Body Material
Matrix Body / Steel Body
Circulation and Gauge
Water Cooling and Gauge Protection
Far Eastern
Transport Package
Exported Packing
12 1/4" (311mm)
HS Code

We are  factory  specializes in drill bits,such as PDC bits, tricone bits, HDD hole opener,Foundation roller cutters  for water well, oil field, gas well,mining,construction, geothermal, directional boring, and underground foundation work all over the world. Our purpose is to sell the high quality products at the lowest possible price.

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling


PDC Bits Application:

1,Suit for drilling medium to medium-hard formations.

2,Evolute asymmetrical blade cutter design and balanced bit load so that bit whirl is prevented .

3,Composite gage protection and low torque design improve rate of penetration .

4,CFD hydraulic balance design results in better bit cleaning and cutting removal .

5,Combined utilization of high performance PDC compacts significantly prolongs bit life

6,Higher nozzle counts and/or fixed ports to best serve cleaning,cooling and cuttings evacuation requirements with available hydraulic flows.Allows for higher flow rates with minimal increase in pump pressure.

Feature:Diamonds are impregnated in the matrix behind the PDC cutters

Benefit:Increased footage drilled in abrasive applications.


Basical Specification
  Size of PDC Bit 12 1/4 inches
 Thread Connection6 5/8 API reg pin
 Blades Quantity 6
 PDC Cutters 16mm
  Operating Parameters
WOB(Weight On Bit)6802.72-31746.03lbs
Formation soft to medium hard formation with low compressive strength or low compressive strength interbedded with hard layer such as claystone,sandstone,and so on.



Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling
SIZE(inch)CuttersBladesFlow rateRotary speedWeight on bit
5 1/2215400~600GPM/25~38L/S60~350RPM3~15Kibs/14~67KN
7 7/8385400~600GPM/25~38L/S60~350RPM3~15Kibs/14~67KN
8 1/2486400~600GPM/25~38L/S60~350RPM3~15Kibs/14~67KN
9 1/2677475~700GPM/30~90L/S60~350RPM3~20Kibs/14~90KN
12 1/4877475~700GPM/30~60L/S60~350RPM3~29Kibs/14~129KN
17 1/2655950~1450GPM/41~63L/S60~300RPM4~30Kibs/18~134KN

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Far Eastern Bit Advantage

1. Force balanced, resist impact to the blade during high-speed drilling, to make bit work stable.

2. Plus wear knot section, reduce collision in the high-speed rotational vibration.

3. Patented matrix formulation, extended bit life.

4. Optimal hydraulic design, easy to move out the drill cuttings and cooling.

5. Equipped with back reaming Cutters.

6. The cutter is high performance to increase the ability of anti-impact and anti-abrasive

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling
Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling
Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Rock Diamond 12 1/4 Inch PDC Bit for Well DrillingRock Diamond 12 1/4 Inch PDC Bit for Well Drilling


1. How to get an exact quotation?

Answer: Please send us detailed information as below:
-Tricone bits(Diameter, IADC code)

-PDC bits(Matrix or Steel body, blades quantity, cutter size, etc)

-Hole opener(Diameter, size of pilot hole, hardness of rocks, thread connection of your drill pipe, etc.)

-Roller cutters(Diameter of cones, model number, etc.)

-Core barrel(Diameter, quantity of cutters, connection, etc.)

A simple way is sending us photos .


Besides above, if possible please provide more information as below:

Drilling depth in vertical well drilling, Drilling length in HDD, hardness of rocks, Capacity of drill rigs, application(oil/gas well drilling, or water well drilling, or HDD, or foundation).


Incoterm: FOB or CIF or CFR, by plane or ship, port of destination/discharge.


The more information provided, the more exact quotation will be offered.


2. What is the quality control for your products?

Answer: All of our production are in lines of API rules and ISO9001:2015 strictly, from signing contract , to raw materials, to each production processes, to product finish, to after-sale service, each processes and sections are in accordant with standard.


3. About lead time,payment terms, delivery ?

Answer: We always have regular models available in stock, prompt delivery is one of our advantages. Mass production depends on quantity of order.

We accept all regular payment terms including L/C, T/T, etc.

We are near from Beijing airport and Tianjin(Xingang) seaport, transportation from our factory to Beijing or Tianjin only takes one day, fast and very economical inland charges.


4. What is the history of  Far Eastern?

Answer: The drilling bits business was started at year 2003 only for China domestic requirement, the name Far Eastern was started from year 2009, now Far Eastern has exported to more than 35 countries and areas. We are one of the earliest Alibaba Gold Supplier members in rock bit field , now we are Gold Plus Member.


5. Do you have Referenced Letters /Recommendation Letters from old customers?

Answer: Yes, we have many referenced letters/recommendation letters issued by old customers who would like to share our stories. 

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

Rock Diamond 12 1/4 Inch PDC Bit for Well Drilling

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