Hebei, China
Business Type:
Registered Capital:
3000000 RMB
Plant Area:
501~1000 square meters
Management System Certification:
ISO 9001
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
Sample Available

Diamond Core Drill Bit, PDC Core Drill Bit, Core Drill Bit manufacturer / supplier in China, offering 4 Inch 101mm Diamond Core Drill Bit for Hard Rock, 9 5/8 Inch Milled Tooth Tricone Drill Bit for Sale, API 8 3/4" Steel Tooth Oil Driling Tricone Bit and so on.

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Supplier Homepage Products core bit 4 Inch 101mm Diamond Core Drill Bit for Hard Rock

4 Inch 101mm Diamond Core Drill Bit for Hard Rock

Get Latest Price
Min. Order / Reference FOB Price
1 Piece US $110/ Piece
Port: Tianjin, China
Production Capacity: 300 Pieces for Each Day
Payment Terms: T/T, Western Union
Type: Petroleum Drilling Tool & Accessory
Usage: Well Drilling Machinery, Offshore Oil and Gas Field Exploitation Machinery
Certification: API
Power Type: Electric
Transmission System: Mechanical
Size: 3"-26"

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Basic Info

Model NO.: 4 inch diamond core drill bit
Condition: Brand New
Brand: Lockheed
Weight: 5kg-810kg
Application Condition: Hard Formation
Colour: Blue, Golden, Red etc
Guarantee Period: 3-4 Years
Processing Type: Forging
Trademark: Lockheed
Transport Package: Wooden Case
Specification: api certification
Origin: Hebei Province, China(Mainland).
HS Code: 82071990

Product Description

4 inch 101mm diamond core drill bit for hard rock

Company Information
   Cangzhou Lockheed Drilling Equipment Parts Co., Ltd. is a professional manufacturer of drilling equipments and tools which is located in Hejian City, the centre of the triangle of Beijing, Tianjin and Shijiazhuang, enjoying convenient transportation.  
  Our products Including below three series with full model types:  
Drilling Bit: rock roller bit,tricone bit,pdc drill bit,single bit,cone bit and hole opener; 
Drilling Equipment Parts: manual tong,elevator,slips,stabilizer;
Workover Fishing Tools: releasing spear,junk basket, overshot,reversing sub,die collar, fishing tap etc.
   Our staff are professional and experienced. By the hard efforts and united cooperation, we have established a wide sale network. Striving for excellent quality, better price and perfect service. Welcome new and old customers to order. 
 Product Description
 pdc core drill bits     
1.balanced force design
2.reasonable layout of PDC cutters
4.high speed
5.adequate stocks
Characteristics of diamond pdc core drill bit:
-Arc type crown design and blade type cutter layout result in high ROP, high core recovery reate and long working life of bit, etc.
-Use both PDC cutters and diamonds for gage protection for extended bit life.
-Dynamic flow simulation technology is employed to optimize hydraulic design of the bit and enhance the bit's cleaning and cooling abilities.
-Inner and outer diamond gage protection. The water course is located at inner gage protection and consequently, cutting elements can receive sufficient cooling and cleaning.
-Force-balance technology is used to improve stability of the bit and prevent the bit from balling up.
pdc core drill bits with MATRIX OR STEEL BODY
Our PDC core bits are the most cost effective way to drill or a core sample. Our bits have 9 or 12 PDC cutters standard. The bits can be constructed from matrix body or steel body. The matrix body bit will last longer initially but can crack after substantial use. The steel body bit is can be repaired and retipped at a considerable cost savings compared to purchasing a new bit.
These Diamond Bits use polycrystalline diamond (PDC) cutters to shear rock with a continuous scraping motion
1 Cutting structure is force balanced and bit blade is asymmetrically designed so that the coal on bit is balanced that resulting better stability of the bit.
2 Main cutters are high performance PDC cutters to insure service life of the bit while improving ROP
3 Cutter exposure is optimized to insure the bit can achieve higher ROP is soft to medium formations
4 Shock absorbers are designed to make the bit capable of drilling through formations with hard stringers.
5 Hydraulic system of the bit is optimized using dynamic flow palters simulation technology to enhance cleaning and cooling effects of the bit to effectively prevent bit from balling. 

1. PDC Matrix Body pdc core drill bits

Type and Features

   PDC core bit can be customized for oil well,water well, mining, explorer well drilling.

Suitable Formation

   Various of hardness rocks or mud except the hardest hardness or ununiform rocks like cobble.

Main Type


2. PDC Steel Body pdc core drill bits

Type and Features

   PDC core bit can be customized for oil well,water well, mining, explorer well drilling.

Suitable Formation

   Various of hardness rocks or mud except the hardest hardness or ununiform rocks like cobble.

Main Type


SPECIFICATIONS of  pdc core drill bits

Outside guage                      

6 in                  
6 1/4 in
5 3/4 in

152.4 mm
158.8 mm
146.1 mm

Core diameter

2 3/4 in

69.9 mm

Cutter size

0.5"/16 (in pcs.)
0.39"/2 (in/pcs.)

13/16 (mm/pcs)

Total PDC cutters


18 pcs

Non changeable Nozzles

6/0.39" (pcs/in)

6/10 (pcs/mm)


8.5 in

215.9 mm

DRILLING PARAMETERS of  pdc core drill bits




Weight on bit

4000-12000 lbs

2-6 tons

Flow rate

17-32 cfm

8-6 L/sec

Rotator Type

RSS, Motor

RSS, Motor

WDT 6 blade core bits are designed to be the primier drilling bit with the greatest amount of core recovery in soft interbedded with medium formations of 2-5 category of hardness.
These bits are distinguished by an increased core recovery rate as they cut through the formation smoothly & focus a consolidated core sample through the centre of the barrel.
WDT core bits are equiped with stabilizing inserts and cutters of increased abrasive and wear resistance. These core heads are designed to track symmetrically and produce straight non-deviating holes & cores.
29 core bits WDT style matrix or steel body
A - 5.50" X 9 cutter
B - 5.750" X 12 cutter
C - 6.125" X 12 cutter

Our Services
1.We will keep track of each customer to get the feedback of product quality and service. And we will make an amendment according to your feedback.
2.If the product size is wrong, we will send the right one freely.
3.We guarantee the high quality. Please feel free to contact us if you found any damage. We will solve the problems ASAP.
4.We can provide product repair services.
   The optimaler price, the best quality, the fastest speed, the best service.Your every piece of advice to us we will be very seriously treatment. If you have any suggestion to us, please surely tell us by mail in a timely manner You are not just a visitor, but our partner in common progress.
Sincerely hope to cooperate with you.
1. How to order the products?

Send the inquiry with detail item description or with Model number. 
If there is no packing demand we take it as sea-way packing. 
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding. 

2. About lead time and shipping time?

Answer : 
The lead time depend on quantity of order. Usually shipped by sea, 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 days. To West of American 20 days.
3.Can I expect a quality products?

Answer :
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. 
Pls do not forget to add below information in your inquiry which will help us to give you the exact quotation at the first time:
1) the size of the tricone bit you need
2) the IADC code of the bit, like 537G
3) the drilling information of the layer
4) quantity
Welcome visit our page, any need pls feel free to contact me. 
I'm Bonnie, always at your service!


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