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Cangzhou Great Drill Bits Co.,Ltd.
Cangzhou Great Drill Bits Co.,Ltd.
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What is a Diamond Drill Bit?

What is a Diamond Drill Bit?

Diamond drill bit is also named diamond PDC bit, it is a type of drilling tool which used for oil and gas, horizontal directional drilling.

The full name of diamond drill bit is Polycrystalline Diamond Compact bit. The important raw material is the diamond cutters (PDC cutters) on each blade.

Diamond drill bits have grown rapidly since they were manufactured and used successfully in the early 1970s. It has lower weight on bit, higher RPM, higher footage and lower cost per footage, which comes to be a very efficient drilling work tool. For achieving a higher RPM, the diamond drill bits also connect with some higher speed tools, like downhole motors, RSS, Torkbustor.

What Does a Diamond Drill Bit Look Like?


GREAT DRILL BITS focus on R&D, design, manufacture, sales, service various diamond drill bit ( PDC bit ) .


According to different raw materials, the bit body has two types: Matrix body diamond drill bit, Steel body Diamond drill bit.

Blades: from 3 blades to 9 blades drilling soft to hard formation.

Diamond drill bit Sizes : 3”- 26 “.

The PDC cutters' mainly sizes: 1008mm, 1108mm, 1308mm, 1313mm, 1613mm, 1616mm ,1913mm,1916mm. The quantity of different cutters can be designed according to drilling demand.


Design Feature :

Features_of_PDC_bits.png

Nozzles Qty: According to request.

Connection: API Standard.


The feature of diamond drill bit (PDC bits) :

1: No moving part.

2: High-efficiency drilling works.

3: Longer working life.

4: Compare with tricone bits, it has higher RPM.

5: Poor impact resistance.

6: It is suitable for downhole motor drilling, RSS application.

How Are Diamond Drill Bits Made?


According to the different raw materials, it includes Matrix body PDC bit and steel body PDC bit, so they have different production lines.


How a Matrix Body Pdc Bits Made?


Design of Graphite Mold (3D design) - Machining of Graphite Mold -Stick substitute, graphite jet -Stick TSP on the gauge pad-Powder Loading (The tungsten powder filled into the mold)-Sintering (It should be heated in the oven temperature of more than 1000 degrees ) - Bit Break-out(Use a vertical press to destroy the graphite mold and remove the drill bit head )-Cleaning (clean the PDC pockets and surface )-Connection (API thread with AISI4145H heat treatment steel )- Welding (Use an automatic girth welder to weld the gap between the crown and the joint, after welding and grind the connection to make it smooth and flat) -heating and brazing PDC cutters (this is a very important process, GREAT has professional welding technical engineers )-Inspection - grinding and trimming - Inspection (Dye penetration test(strictly inspection standard) - paint and packing.


Matrix-body-PDC-bits.jpg

How a Steel Body Pdc Bits Made ?


Designing according to the customer requirement (3D design) - Steel rough machining (AISI4145H heat treatment steel) - CNC machine milling (GREAT have advanced Mazak CNC machines, which can make in very high precision.) -Hard facing (France made Hard facing raw material, have more wear resistance and erosion resistance ) -Inspection - Welding(Use an automatic girth welder to weld the gap between the crown and the joint, after welding and grind the connection to make it smooth and flat) -heating and brazing PDC cutters (this is a very important process, GREAT has professional welding technical engineers )-Inspection - grinding and trimming - Inspection (Dye penetration test (strictly inspection standard) - paint and packing.


Steel-body-PDC-bit--(Mazak-CNC-machine).jpg

How Much Does a Diamond Drill Bit Cost?


Generally, the Diamond drill bits cost is higher than Tricone rock bits.

We know the Diamond drill bits consist of PDC bit body and PDC cutters.

So Let's see the analysis of the main factors affecting (Diamond drill bit) PDC bit cost :

1: Steel body: Heat treatment or not.

2: Hard facing material difference:  France made hard facing, China made hard facing, without hard facing.

3: PDC cutters: All the cutters are America made, Primary cutters are America made, the other pockets are China made, All cutters are China made.

4: Sleeves designs: Yes or not. We advise sleeves design, it can be prevented washout the nozzles, and keeper longer working life.

5: Gauge protection: Arc PDC cutters, Carbide Insert, Hard facing.


AISI4145H_heat_treatment_Steel.png                                             Gauge_protection.png

Hard_facing.pngNozzles_with_sleeves.pngPDC_cutters.png


If the customer drills in oil & gas and want to keep a higher quality, we will advise the heat treatment steel, sleeves with nozzles, France made hard facing, GREAT customized PDC cutters, Arc PDC cutters gauge protection design.

So on the basis of the above reasons, the Diamond drill bit cost approximately USD1,000.00 up to USD50,000.00 from sizes 3" to 26".


For a suitable product, please tell us more information, so that our engineers also can make a recommendation.


GREAT DRILL BITS Advantages:



1. Two manufactures: New manufacture with 40,000 square meters in Hebei Province, very near to Beijing, and build our own R&D Exchange Center in Beijing.


2. Government give us a High-tech Firm Authorities Certification, we got API Spec7-1 Quality Control Standard. ISO9001:2008 Quality Management System.ISO14001:2004 Environment Management System.


3. Mazark machines are imported from Japan, High precision CNC machines.


4. Strong designs, engineers, production, sales and after-sales service team.


5. OEM&ODM service with a confidentiality agreement.






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