Mining Drill Bits

The production system of Mining Industry is a complex system composed of many links.

Problems and Solutions to Coal Mine Drilling

In coal mine drilling, complicated geological and hydrologic conditions, thick alluvium of topsoil, many quicksand layers, large water inflow, large well diameter, deep wellbore, and often concentrated operation scale, as well as high temperature, high pressure, and high formation stress in the deep well, will greatly aggravate the severity of underground complexity and the difficulty of treatment.

However, some of the above problems can be well solved according to the characteristics of coal mine drilling:

The problem of increasing drilling speed.

Prevention and treatment of well collapse, diameter reduction, drilling drop, and other accidents.

Anti-deviation technology.

High-temperature resistance.

Problems of cutting tools in deep well construction.

Advantages of Mining Drill Bits

Therefore, it is necessary to perfect the structure of the large-diameter coal mining drill bits.

With the increase of drilling fluid density and well depth, the fluid column pressure exerts a pressure holding effect on the broken cuttings at the bottom of the well, and the broken cuttings from the cone bit are not easy to leave the bottom of the well under the action of differential pressure, resulting in the formation of a cushion at the bottom of the well, reducing the crushing efficiency, etc. Reasonable bit structure will speed up the flow of cuttings in the bottom hole, improve the crushing efficiency, accelerate the drilling speed and shorten the drilling cycle.

As well as improving the life of the roller bit, the service life of the roller has a great impact on the construction cost of drilling well. The life of the roller bit mainly depends on the life of seal, bearing and parent.

Recommended Size and Types of Drill Bits Used in Mining

GREAT Mining tricone rock bit is utilized for blasting hole open-pit mining. Depending on the different formations of customers, we can offer different mining drill bits with the sizes ranging from 6 3/4″ to 16″.

For mining tricone bit, we recommend 532、632、642、722, etc.

Focus on drilling bits for 20 years.

Among all the drill bit manufacturers in China, Cangzhou Great Drill Bits Co.,Ltd. is famous for its specialty and service quality.

Excellent Feedback from customers:  More than 20 Engineers & 100 senior technical & 50 sales and services team.

GREAT PDC bits run in the oilfield

Wholesale Diamond Drill Bit Oil Well
Oil and gas exploration is a rigorous and complex work. The discovery of new energy areas not only means the supplement and enrichment of industrial raw materials, but also means the progress of industrial development and the improvement of the overall national economy at the current level. In the actual development of oil and gas energy, the oilfield drill bits are one of the main drilling equipment. According to the different working environment and regional environment, the specifications and types of the oilfield bits can also be different.

How to Choose Approriate Oilfield Drill Bits?
Before the commencement of the oilfidle project, the type of drill bit to be used shall be determined according to the local rock structure and rock properties. Selecting a suitable oilfield drill bit will have different effects on the cost consumed by oilfield drilling, the speed of drilling engineering and the quality of drilling.

In the process of oilfield drilling, the drill bit should be selected reasonably and scientifically according to the specific needs and design schemes, so as to improve the working efficiency and quality of oil drilling. Only in this way can the oil and gas development project give better play to its own value and make certain contributions to the development of oil and gas industry.

Modern Oilfield Bits Technologies
The drilling technology level has been improved through optimized oilfield drill bit designs:

Through various kinds of software to reasonable design of oilfield bits;
Through the simulation test to find out the advantages and disadvantages of oilfield drill bits, and formulate the test standard of oilfield drill bit test accordingly.

GREAT DRILL BIT company has also applied for the corresponding drill design patent. Through a lot of drill bit tests, we have made a lot of oilfield drill bits research results, and developed a series of high performance drill bits for oil drilling, which has played a very important role in improving the mechanical speed of the oilfield drill bits and crushing efficiency, in order to achieve the optimal effects of the oilfield drill bits.

What Are Oil Drill Bits Made Of, What Are The Suitable Oil And Gas Drill Bit Sizes, And What Is the Oil Drill Bit Design?

Great Drill Bits is the industrial leading PDC bits and tricone bits manufacturer. We pruchase steel raw materials from the biggest steel material factory in China. Usually, PDC bits and roller cone bits are used as oilfield drill bits.

PDC Bits Materials, Sizes And Design
AISI 4145H round steel cut by sawing machines are the raw materials of PDC bit.
The suitable PDC oil and gas drill bit sizes are from 3” to 36” in both steel and matrix body.
By using new surface wear-resistant materials and the feature of positive and negative ions, PDC bits become more effective in preventing mud packs.
PDC bits has been optimized structure design. Through increase the narrow area in the bit design, it can deepen the waterway, and reasonably improve the blade thickness, so as to maximize the flow area in the use of the bit and improve the chip removal ability of the bit.
By using the bottom hole simulation and nozzle optimization design, the number and position of nozzles can be reasonably arranged to prevent mud balling more effectively.

Roller Cone Bit Materials, Sizes And Design
About the steel material of roller cone bit, the 15MnNi4Mo steel is used for the cone of roller cone bits, and the 15CrNiMo steel is used for the palm of roller cone bits.
The suitable sizes of tricone bit is from 4 ¾” to 36” in both TCI and Mill tooth.
During the processing of tricone bit ,the precision of CNC lathes is ±0.01mm , it can meet all the turning requirements. And after turning a certain numer of pieces, we must change the tool of lathes to make sure the precision of machine.
Use the cobalt welding wire to hard facing the small axis, big axis on the bearing and the top of roller bits leg, to increase the abrasive resistance of roller bits.

How Are Oil Drill Bit Cost Determined?
GREAT has a complete and strict quality inspection record for any oilfield drill bits from raw materials to finished products. Every process is ensured to be qualified and then the drill bit manufacturing can enter the next process, so as to ensure that every oilfield drill bit received by customers is qualified. Customer satisfaction is our final goal.

The Factors Determining PDC Bit Prices Are As Follwing, Which You Can Consider When Purchasing:

  1. PDC Cutters

We have three options for you: All PDC Cutters for the bit choose American PDC cutter;
Key Position Cutters are American PDC cutter;
Back row cutter and the other position are high end China Cutters;
Key Position Cutters are Chinese best PDC bitter;
Back row cutter and the other position are other China brands Cutters.

  1. Steel Raw Material:

Heat treatment AISI 4145H Steel,–specially for oilfield drilling bits;
Or Heat treatment 42CrMo Steel

  1. Welding Material:

France TUF-COTE series welding rod, Fine shaped surface, high impact&wearing resistance and high erosion resistant;
China welding rod, Cracks and air holes in hard facing, Low impact&wearing resistance, High erosion resistance;
Non-hard facing, soft bit body, low properties.

The Factors Affecting Tricone Bit Prices:

  1. steel raw material and hardfacing material;

2, alloy teeth of tricone bits.

You are welcome to inquiry GREAT BIT to learn more about our drill bit price and our pdc oil drill bit manufacturers .

Good Feedbacks of Oilfield Drill Bits from GREAT BIT Customers

  1. 12 1/4”537,3500m geothermal well, bearing in good condition and teeth wear normally, our customer is very satisfied with the result.

If you want to know more details of oil well drill bits for sale , please visit our website.

How to Use Tricone Bit Appropriately?

How to Use Tricone Bit Appropriately?

1. Choose the drill bit types appropriately

(1) According to the lithology of the drilled formation, the following principles should be followed when selecting the type of drill bit:

a. In the shallow well section where the rock is cemented and loose, the drilling speed of the drill bit and the prevention of mud packs should be considered;

b. In the deep well section where the trip is long, the footage of the drill bit should be considered;

c. When the outer row teeth of the drill bit out of the well are severely worn, a bit with gauge teeth should be used;

d. In the easy deviating well section, a bit with small slip and many short teeth should be used;

e. Wedge-shaped tooth drills should be used when selecting insert drills;

f. For diamond limestone, it is advisable to use double-cone-tooth and projectile-shaped tooth drill bits;

g. When there is more shale in the formation or the density of drilling fluid is higher, a bit with a larger slip amount should be selected;

h. When the stratum is limestone or sandstone, and a bit with a smaller slip amount should be selected;

i. When drilling hard and highly abrasive stratum, it is advisable to use pure rolling button and double bevel bit.

(2) In order to optimize the hydraulic parameters of bit, the longer nozzle and unequal diameter combined nozzle bit should be preferred.

2. Inspection of a drill bit before drilling

(1) Check whether the model and diameter of selected bit meet the requirements;

(2) Carefully check whether the thread, weld and teeth of the drill are in good condition;

(3) Check whether the nozzle is installed firmly and the water hole should be unblocked; when rotating the cone of the rock bit by hand, the bearing seal should be intact; the pressure compensation system of the drill bit should be intact, and the pressure relief hole should not be blocked.

3. Matters needing attention when a drill bit enters the well

(1) After cleaning the drill thread, apply special thread oil;

(2) Choose a suitable loading and unloading device, and do not jerk when the drill bit is put into the loading and unloading device;

(3) Tighten according to the specified torque;

(4) The drilling operation should be stable, and no hard pressure should be encountered in case of resistance. Drilling of the insert bit should be slow to avoid damage to the alloy teeth in the hard formation and irregular hole;

(5) When drilling down and encountering an obstruction, the depth of the well, the situation and time of the obstruction should be noted, so as to determine the cause of the obstruction and control the working time;

(6) Drill down to a certain distance to the bottom of the well (a single root). The pump should be turned on and the turntable should be slowly lowered. It is strictly forbidden to go down to the bottom to open the pump.

4. Precautions for drilling of a drill bit

(1) The new drill bit should be run-in lightly for about half an hour, and then gradually increase to the specified WOB, and it is strictly forbidden to pressurize to start the turntable;

(2) Concentrate and deliver the drill evenly when operating the brake lever to prevent accidents of slipping and sudden drills;

(3) During roller tricone bit drilling, the changes in lithology and the working conditions of the bit should be analyzed at any time according to the change of the drill pair and the operation of the bit, and the drilling parameters should be adjusted in time.

5. Determine the starting time of a drill bit

(1) Determine according to the wear of the bearing and teeth, the phenomenon of bearing damage:

The turntable has periodic jumps. If the bit pressure is small, the jump is light. If the bit pressure is big, the jump is heavy; the drilling speed drops; the pump pressure is normal but the pointer of the weight indicator swings.

(2) The phenomenon of cone jamming:

The load on the turntable increases; the turntable chain jumps; the kelly rod is crappy; the turntable is stopped and the car is reversed; the drilling speed drops; the weight indicator pointer swings severely.

(3) The phenomenon of tooth grinding (stripping):

The load of the turntable is reduced; the kelly does not jump; the drilling speed is significantly reduced or there is no footage; the weight indicator indicates smooth and no swing; the pump pressure is normal.

Focus on drilling bits for 20 years.

Among all the oil drill bit manufacturers in China, GREAT Brand is famous for its specialty and service quality.

Excellent Feedback from customers:  More than 20 Engineers & 100 senior technical & 50 sales and services team.

Working Principle and Characteristics of PDC Bit

What Is a PDC Bit

Working Principle and Characteristics of PDC Bit

PDC bit is the abbreviation of Polycrystalline diamond drill bit for china, also known as Polycrystalline diamond cutting block bit or composite chip bit. Because of its advantages of fast drilling speed, long service life and high footage pdc bit components are widely used in oil drilling.

1. Structure characteristics of PDC bit

PDC bit is composed of the bit body, PDC cutting teeth and nozzle. According to different structures and manufacturing processes, the PDC bit is divided into two series: steel body and matrix body.

The whole bit body of rigid PDC bit is made of medium carbon steel and formed by the machine manufacturing process. Drill holes on the working face of the bit, and fix PDC cutting teeth on the bit crown by pressing in and tight-fitting. The crown of a drill bit is treated by a surface hardening process (spraying tungsten carbide wear-resistant layer, carburizing, etc.) to enhance its erosion resistance. The main advantage of this kind of bit is a simple pdc bit manufacturing process, but the disadvantage is that the bit body is not erosion resistant and the cutting teeth are difficult to be fixed, so it is seldom used at present.

The upper part of the PDC bit is made of steel and the lower part is made of WC wear-resistant alloy. The pdc rock drill bit is made by powder metallurgy sintering process. The PDC cutting teeth are welded on the preformed groove of the carcass with low-temperature solder. Tungsten carbide matrix has high hardness and erosion resistance, so the matrix PDC bit has long service life and high footage, which is widely used at present.

2. Working principle of PDC bit

PDC bit breaks rocks by cutting. The self-sharpening cutting teeth can easily cut into the formation under the action of WOB and move the shear rock forward under the action of torque. Many PDC cutting teeth work at the same time, there are many free faces of the bottom rock, and the rock is easy to be broken under the shear action, so the rock-breaking efficiency is high and the drilling speed is fast.

3. Correct use of PDC bit

Diamond PDC bit has the best effect in large homogeneous soft to medium-hard formation. It is not suitable for drilling gravel layer and soft hard cross formation.

Drilling with low WOB, high rotation speed and large displacement has a good effect.

Before the bit is put into the well, the bottom of the well shall be clean to ensure no metal falls.

When the bit is just put into the well, it should adopt small bit pressure and low rotation speed to run and resume normal drilling after the bottom of the well is formed.

PDC bit is an integral bit, without any moving parts, suitable for high-speed turbo drilling.

As professional pdc cutter manufacturer, we have types of related products for sale, anything you need, please contact us.

What Are the Advantages of an Oil Well Bit?

What Are the Advantages of an Oil Well Bit?

1. The composition of oil well drill bits

The oil wellbit is one of the widely used drilling bits, which has the characteristics of adapting to a wide range of formations and high drilling speed of machinery and equipment.

The oil well drill bit is composed of more than 20 parts such as cutting structure, bearing structure, locking element, oil storage seal installation and nozzle installation. The current motor is repeatedly used by the motor in the wellbore, forming the front part of the motor with greater rigidity, smaller relative discharge area, and higher relative return velocity. The upper annulus is taken to form a vortex that affects the cuttings at the front. The formation of accumulation affects the drilling speed, and further formation of the repeated fragmentation of those cuttings by the PDC drill bit, which is easy to form a mud pack of the bit remover.

2. What are the advantages of oil well drill bits?

(1) The steel ball is used to lock the roller, which can be suitable for relatively high speed.

(2) The O-ring seal adopts a wear-resistant, highly saturated nitrile rubber, which increases the cross-section of the seal ring, and adds a small sealing boss at the outer end of the seal area to improve the sealing performance.

(3) The oil well drill bit uses high-strength and high-toughness alloy teeth, which improves the ability of the teeth to resist impact and reduces the probability of tooth breakage. Soft formations are inlaid with spoon-shaped teeth.

(4) The bearing of the palm of the oil well bit is covered with a layer of hard alloy, and there is also a silver-plated layer on the roller shaft to improve the anti-bite and load-bearing capacity.

(5) The oil well drill bit uses a grease that can withstand a temperature of 250°C and has low wear, which improves the ability of the drill bit.

(6) The optimized number of teeth of the oil well bit and the equipment such as exposed teeth and alloy teeth can realize the bit cutting and speed at a larger height.

If you want to know more details of drill bit manufacture, please visit our website.

The Cause of PDC Bit Balling

 The Cause of PDC Bit Balling

Ⅰ. The common phenomenon of PDC drill bit balling　　

1. The footage is obviously slower when drilling, or it is obviously higher when drilling;

2. Increasing or reducing WOB has no obvious effect on drilling speed;

3. It has little effect on the drilling rate when the formation changes;

4. Drilling tool puncture occurs during drilling, and the circulation short circuit occurs, and the drilling speed obviously slows down after treatment.

5. The teeth of the drill bit cannot effectively penetrate into the formation, showing that the torque is reduced or the torque fluctuation range is reduced;

6. The phenomenon of “piston pulling” occurs during tripping and drilling.

Ⅱ. Causes of PDC bit balling

1. Geological factors: the drilled stratum is soft mud with non-diagenetic upper part, which is very easy to stick to the surface of the drill bit, which will cause balling of the drill bit after compaction; although the shale in the stratum is diagenetic, it is easy to hydrate and disperse, making the mud or solid phase in the wellbore greatly increases, which is adsorbed on the surface of the drill bit and causes the bit balling; or the formation contains dispersed gypsum, which causes mud pollution, and the harmful solid phase in the mud is difficult to remove, which greatly increases the probability of formation of bit balling. Under the action of the pressure difference, the harmful solid phase in the wellbore and the cuttings that are not carried out in time are absorbed to form a thick mud cake, which accumulates under the diamond PDC bit when starting the drill, causing the bit balling.

2. Mud performance factors: poor mud inhibition, unable to control the hydration and dispersion of shale; too high solid content and sticky cut, the drilled cuttings are difficult to remove and are easily adsorbed on the surface of the drill bit. If a solid-free phase drilling fluid is used, the drill bits will never have mud packs; the proportion of mud is too high, the water loss is large, and thick mud cakes are easily formed; the lubrication performance is poor, the surface of the drill bit cannot form an effective protective film, and the inferior solids in the drilling fluid are easily adsorbed on the drill bit.

3. Engineering technical factors: the drilling displacement is small, the bottom hole and the drill bit cannot be cleaned effectively, and the upward and backward speed is insufficient. The cuttings stay in the well for a long time and adhere to the well wall to form a thick mud cake, especially in the upper part of the drill. It is more serious when the speed is high; in the soft mudstone formation, the drilling pressure is too high, the formation or the drill cuttings and the surface of the drill bit form direct contact, causing the bit balling; the long open hole drilling does not carry out halfway circulation, and the mud cake scraped from the well wall or drill cuttings will cause the drill bit balling.

4. Drill bit selection factors: The water eye design cannot meet the chip removal requirements; the channel chip removal angle prevents the drilling cuttings from smoothly leaving the bottom of the well.

As one of rock drill bits manufacturers, we will provide more types of high qualty products for sale, if you are interested, please leave us a message.

The Application Field and the Drilling Technology of the Roller Cone Bit

The single roller cone bits rock by crushing and shearing. The cone is rolling at the bottom of the well, so the requirement for the torque is small, which can greatly reduce the mechanical load.

When the drill bit is working, the roller cone not only rotates around the axis of the drill string but also rotates around its own axis.

According to the number of roller cones, roller cone bits can be divided into single roller cones, double roller cones, three roller cones, four roller cones and multiple roller cones. According to the method of breaking rock, it can be divided into full-scale drilling cone bit and coring cone bit. According to the nature of the work, it can be divided into forward pilot hole drilling positive circulation roller cone bit, a pilot hole drilling reverse circulation roller cone bit, center continuous sampling cone roller bit, positive circulation reaming roller cone bit, and reverse circulation reaming roller cone bit. According to the teeth and structure of roller cones, it can be divided into steel teeth and embedded roller cone bits. When using it, it is necessary to choose the adaptation range of its tooth shape according to the local conditions.

The roller cone bit is used for drilling and has a wide range of applications, and it can be applied from soft formations to hard bedrock formations.

Used in the water well, and the geothermal well

In contracted water well drilling projects, the adoption of roller cone drilling accounts for more than 80%, especially in the deepwater wells and the geothermal well construction. A small number of traditional fishtail drill holes, three-blade drill bit reaming, and hard alloy steel core drilling, which is not only laborious but also lavish, causing great waste to the construction and increasing the burden. Now, there is no choice but to seek for the innovation and upgrade of the roller cone drilling.

Used in the gas mining

Safety accidents occur frequently in coal production. CBM wells are generally drilled with roller cone bits in the first opening, and pneumatically by DTH hammers in the second opening. Due to the large diameter of the gas discharge well and there are certain requirements about the verticality of the hole. Therefore, the three roller bits are generally used to drill the front pilot holes, and then the roller cone drills are expanded to form the well.

Used in the trenchless project

In the construction of trenchless crossing project, in addition to using winged carbide back-expanding drill bits in loose formations, some bedrock formations also need to use roller cone welding back-expanding drill bits to complete the task. It mainly uses roller cone reamer and PDC reamer.

Used in the foundation construction with large diameter pile

In the construction of building and bridge foundation engineering, rock-socket piles with large diameter and high bearing capacity are often required. The previous method is to use cemented carbide and steel grain drilling, but now, the traditional drilling process has been replaced by the roller cone drilling process, which is of simple operation and strong adaptability. It can realize non-circulation drilling, mud forward circulation drilling, reverse circulation drilling and bottom expansion pile drilling. The main tool is a barrel drill. If it are co-used with a replaceable tooth palm piece, the rock will be broken evenly, with high efficiency, low cost, and the quality of the drilled hole will be better.

As one of oil well drill bit manufacturers, we will provide more types of high qualty products for sale, if you are interested, please leave us a message.

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Cangzhou Great Drill Bits Co.,Ltd. Last updated: 2022/08/12

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If you want to know more about roller reamer function, please visit our website.

As a manufacturer of drill bits, we will provide more types of related products for sale, if you have needs, please contact us.

Shipping Info

Shipping Info

Our PDC bit and bi-center bit, PDC reamer with iron packaging, equipped with high-quality shackle device, convenient for the extraction and installation of the bit; The special suspension design can better guarantee the safety of the PDC bit breaker crown composite during transportation. Generally speaking, our PDC bit package with bit breaker and extra nozzles if needs.

Our Tricone bit package is a carton box with our logo or wooden box according to customer request.

We guaranteed all the packages are safety for shipping and the packaging material is allowed to export. Our good quality packages also can be used more times.

Depends on the orders quantity, we have the below shipping suggestions:

DHL: Sample bit; Door to Door, fastest.

By air: Urgent orders.

By ocean or by Train: Normal orders.

We have organized the shipping department, they will arrange all the shipping if the sales department sends a request shipping. Firstly, we will check the safest, fastest, and cheapest cargo shipping company shipment the bits to China Port. Our broker will arrange to load according to the customer request, and the tracking number or BOL will be provided when sailing. Also will be checking the ETA. So that our customers can arrange customs our bits.

If you want to know more types of china drilling tools, please contact us.

PDC Bit

PDC Bit

PDC bit is short for polycrystalline diamond bit. The other name for the PDC bit is Diamond bit. As one of the most professional PDC drill bits manufacturers in China, Great bits design and manufacture a wide variety of Matrix body PDC bit and Steel body PDC bit. Produceg by Great, a drill bit factory in China, PDC bits are offered in a variety of sizes, blade count, and cutter sizes.

PDC Drill Bits For Sale

Matrix Body PDC Bit

Matrix body PDC bit is made by Tungsten carbide podwer, it is very high hardness material, mainly used for deep Oil & Gas well drilling.

Steel Body PDC Bit

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.

Bi-center Bit

This type of Bi-center bit mainly used for medium to medium hard compressive and abrasive formation.

PDC Core Bit

GREAT customized made Diamond core bits ,which including Matrix body and Steel body.

RC PDC Bit

RC PDC bit from GREAT are manufactured from AISI 4145H heat-treated steel.

PDC Bit Classification by Material：

What is PDC material? According to the production material, the PDC drill bits for sale on the current market can be roughly divided into the following two types:

Matrix body PDC bit: This type of diamond PDC bit is made of tungsten carbide powder, and the gauge protection is TSP.

Steel body PDC bit: With the AISI 4145H heat treatment steel (America standard steel ), the steel body PDC bit can be used for high-quality CNC machines milling pockets, blade, nozzles.

Most of the raw material Great uses for our diamond PDC bit is made in USA and France. Our supplier technical engineers will come to our factory to train our welder and have meetings with us so as to show their new products regularly. We communicate with our suppliers very well. So if our customers need it, we, as PDC drill bits manufacturers, can ask our engineers to have a meeting with each other face to face.

PDC Bit Classification by Application:

Mining Industry

There are some 3-blade PDC bits mainly used for the mining industry in Australia, and Russia. The formation is very soft. Choosing a Steel body PDC bit can save more drilling costs.

Water well drilling

Having higher ROP, diamond PDC bits are also widely used as water well drill bits for geothermal drilling.

Oil & Gas drilling

– Polycrystalline diamond compact bit is the most widely used bit in the field of Oil &Gas drilling. Hydraulic factors are very important to the bit during drilling.

– PDC bits have been used in areas that were previously unavailable, such as harder, more abrasive, and more variable formations.

– This expansion into the new field has a great impact on the balance between the diamond (fixed cutter bit) bit and Tricone bit.

– The diamond PDC bit is mainly composed of the bit body, cutting teeth, nozzles, gauge protection, and API Thread connection.

If your drilling has any problem, GREAT can provide a solution and service.

PDC Drill Bit Specifications

PDC Bit Design

The advanced designing software of GREAT is the guarantee of precision and reliability of the development. Our continuous improvement for a specific application results in continuously outperforming PDC drill bits for sale than the previous ones.

PDC Drill Bits Price

How much does a PDC drill bit cost? You may be interested in this. While PDC drill bits price varies from different materials and types. To increase the efficiency and quality of use, the PDC drill bit cost is an important part of the equipment, which is why you cannot compromise on their quality. All the PDC bits are subjected to strict quality control by GREAT to ensure that you always receive maximum satisfaction. Contact us to get the quote for your customized PDC drill bits.

Cangzhou Great Drill Bits Co.,Ltd. is a drill bit manufacturer, we have rock drill bit for sale, drill bit that makes big holes and etc. Welcome to know pdc bit sizes or pdc drill bit specifications and How much does a PDC drill bit cost?

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