D3-50mm Carbide Rod For Making Gundrills With Custom Design Economic Deep Hole Drilling

Product Description:Coated drill bits are especially suitable for machining hard, difficult-to-machine materials. The coating can improve the wear resistance of the drill, thereby increasing the service life of the tool (except for the material aluminum, the coating is not suitable)

Product Description

Gun drill is a specialized cutting tool used in gun drilling machine. 

KBD ’s brazed  single flute gun drills have following properties:

Diameter range: 3 – 40mm

Overall length:  5000mm (maximum)

Single fluted type is the most common type. And the most widely used.

Contains one-piece carbide drill bit and steel drill bit with carbide inserts.

The tube and shank are made of steel material. And through heat treatment.

The three parts are brazed to be a complete tool.

Drillstar sells gun drills in diameter ranges from 1.40 mm to 50.80 mm (0.055″ to 2.0″). Also, we offer a wide variety of gundrill types such as:

  • Solid carbide tip & shank, single kidney oil hole, single flute

  • Single round oil hole, single flute

  • Two round oil holes, single flute

  • Kidney shaped oil hole, single flute

  • Two oil holes, two flute

  • Single oil hole, single flute, chips ahead reamer

  • Two oil holes, two flute, chips ahead reamer

The rated grinding angle fits for drilling of the most of material.  After using, through re-grinding can prolong the service life.


1 All carbide tips are from European carbide manufacturers ESTECH and Ceratizit, with which guarantees the quality of the tools. The suppliers also provide the materials to Boteck and TBT.

2. Stable quality which are testimofied by clients around the clients.

3. Fast delivery: We can delivery with 7 days for general quantity while EU and USA factory usually spend 1 month.

KBD Single Flute gun drill grinding angles

  1. Diameter≤5.00mm(standard grinding angle for single blade gun drill with diameter no more than 5.00mm.)


  2. Diameter 5.00~20.00mm(Standard grinding angle for single blade gun drill with diameter no more between 5.00mm and 20.00mm)


  3.Diameter≥20.00mm( standard grinding angle for single-blade gun drill with diameter over 20.00mm)


PS: We can adjust the angles according to the material being drilled and accuracy requirements.

Clamping sleeves

In addition to manufacturing below standard clamping sleeves, Drillstar also customizes clamping to your special requirements (from a diagram or sample)

Dezhou Kabaide Cutting Tool Co.,Ltd is a manufacturer of gun drills, located in Dezhou,Shandong which is a base city for deep hole drilling. Our brand is “KBD". We can produce many sizes of gun drills as well as non standard gun drills according to clients' special requirements.
We focus on gun drill production business. We have special deep hole drilling tool machines.Our gun drill carbide tip (brand ESTECH) is sourced from Switzerland,which guarantees the quality of the tool. ESTECH was founded in 1941,is a partner of Botek.
Our company invites famous cutting tool professors in this industry to instruct the research and development.With many years development,we have our own technique process, and registered our own brand.Nowadays,our products are sold well in domestic market and overseas,and are highly praised by our customers.
As a good private owned company, we have innovative,capable and flexible structure,and complete and scientific quality control system.Our gun drills are high hardness,good rigidity,high accuracy,long lasting,and good cost performance.
Continuous improvement of the process, solid progress to produce the gun drills, creating a national brand,and to pursue the excellence is our eternal goal.

Q: Do you sell parts?
A: If you ordered an item from us and need a replacement part outside of warranty coverage, we are happy to help you place a replacement parts order! 

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A: Yes! We are proud to only sell only the best quality authentic products. Counterfeits are not allowed on our website. 

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A: Most of our products have warranties on manufacturing defects. Some products also offer a complete warranty from 1-5 years from the date of purchase. These warranties vary from
item to item! Which may be mentioned on the product listing, for any further queries, contact us regarding this and we will be happy to help. 

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A: We have a lot of item data constantly being updated! Sometimes this may lead to issues like inaccurate product information, incorrect pricing or outdated product availability. We apologize for those issues.

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A: If you need your product faster than what is estimated, we may be able to offer overnight or two-day delivery at an additional charge. You can raise such a request and our team can update the shipping options on the phone and can choose the suitable option by paying the corresponding charges.

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