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Quick Details

  • Place of Origin: Fujian, China (Mainland)
  • Brand Name: Huazuan
  • Model Number: HZ216
  • Type: Core Drill Bit
  • Material: Diamond
  • Use: Masonry Drilling
  • Application: core bits for concrete granite marble tile
  • Material of Working Part: Diamond, Cobalt bond
  • Performance: Long Service Life core drill bits
  • Blade Welding Technology: Laser or Silver welding for drill bits
  • Segments' Manufacturing art: Sintered,cold-pressed,hot-pressed
  • Feature: Sharpness,smooth cutting
  • Diameter of core bits: 27mm-500mm
  • Tread cap: 1 1/4-7;5/8-11,M14
  • Length of core bits: 120mm, 160mm, 370mm, 450mm
  • Quality grade: AAA grade diamond core drill bit

Packaging & Delivery

Packaging Details High quality diamond core drill bit packing way :pastic paper,hard board, wooden box, usually, 10 pcs/box
Delivery Time 7-10 days after receiving the total payment

Different type Diamond Core Drill Bits for drilling different materail concrete granite marble tile

Product Description


Product name

Diamond Core Drill Bits for drilling different materail


Huazuan or OEM


Core drill bit


Segment + core bit matrix 



Working length



1 1/4-7;5/8-11


Drilling machine


Drilling reinforced concrete, natural stones, bricks, blocks & Rock





Quality Control


1. Strict Raw material inspection

2. Professional formula

3. Production process control(PDCA+7S Principle)

4. Do some cutting testing to sure the using function

5. Products pass ISO9001 and SGS inspection



8PCS for each size

Payment term

TT,Western union,Paypal etc


As customers' requirement.


7-10 days after receiving the payment.


ISO9001 and SGS Product quality control.

Main market

India,Iran,Turkey,Spain,Italy,Germany,England,USA,Canada,Egypt etc.


There are many kinds of diamond core drill bits for your choice, you can click photo to check details.

1. Roof top V shape segment diamond core drill bit for concrete, reinforced concrete. 


2. Three parts diamond core drill bit for reinforced concrete, concrete


Diamond core dirll bit Segments

  • All our diamond core bit segments have well designed bond systems combined with high concentrations of top quality synthetic diamonds to provide trouble-free drilling through a variety of applications
  • Diamond core bit Segments including:1)crown type; 2) turbo type; 3)roof type 4)straight type for you choose. 

Steel Barrel

  • All our barrels are made using top quality steel and are guaranteed to run true

3. Dry type diamond core drill bit for granite stone


4. Center pilot diamond core drill bit for stone


5. Electroplated diamond core drill bit for marble tile


Core bits Description:

Diamond Core Drill Bit is a cylinder used for plunge cutting out materials. It is composed of a heat treated steel core and the working part which consists of diamond and metal powder. Diamond core drill bit usually have a single layer of diamonds, held by a touch durable nickle alloy. Core bits are able to retain their original shape and dimensions through their working life. Unlike sintered (metal bond) where diamond particles are buried in bond and held together by metal binder deep inside. The core bit allows diamond particles to protrude from the bond matrix, providing a free, faster drilling action with minimum heat generation.


For diamond drill bit diameters 10mm to 38mm we use high quality 10mm high quality crown (ring) diamond segments – This helps for an easy start-up when hand held drilling.


For core bits diameters 40mm to 500mm we use high quality 10mm high diamond segments with castellated tips to insure an easy start-up and fast opening of the segment.Usually customers will choosing the thread of 1-1/4-7.





Packaging & Shipping


Our Services


Why Choose us?

1.We are reliable Alibaba Gold Supplier,Support Trade Assurance

2.We are leading manufacturer in diamond tools, more than 20 years experience

3.Rich experience in Global market, export to more than 60 countries.

4.100% QC inspection Before Shipment

5.Keep researching and developing the latest technology

6.Reply within 24 hours.

Company Information




Q:Are you a factory or trading company of diamond core drill bits?
A:We are factory.


Q:Where is your factory located?How can I visit you?
A:Our factory located in Quanzhou City,Fujian Province,China.You can fly to Xiamen International Air Port or Jinjiang Air Port,and we will you pick you up.Welcome you to visit our factory.


Q. How is your quality of core bits?
A. We have a very seriously control system(ISO 9001 and SGS product quality control) and 100% QC inspection Before Shipment.


Q.What we should do if your diamond core drill bits can not run well?

A:Please don't worry we will solve this problem with yourside.

Give us detailed report.Analyze the reason.Try to find a way to solve the problem.

If it's our problem and not possible to solve then will give replacement.


Q. Do you have different quality for different kind of stone?
A. Yes, according hardness of stone and stone’s feature, we have different typology respectively.


Q. If we need technical support, can you offer us?
A. Yes, we have an experienced team, offering our customers additional benefits with specific advice, by our product managerment staff, engineers and technicians.



Diamond core drill bits,diamond core bits,hole saw, diamond hole saw


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Trade Assurance
China (Mainland) | Manufacturer, Trading Company
Transaction Level:
Supplier Assessments:
26 Transactions 190,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $269,000
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