Gw Carbide-Cemented Carbide Twist Drill Bits

Grewin-High Precision CNC Lathe Turning Tools Tungsten Carbide 3xd/5xd/8xd Twist Drill Bit

Raw micro grain material, high hardness and T.R.S
Co: 10%,Wc:90%
TRS: >3600 N/mm2
HRA: 91.8-92.4, HRC:45-50/55-60/65/68
Grain size: 0.4-0.6μm
Helix angle: 30°-45 °
Diameter of cutting edge: 0.2-0.9mm; 1-20mm
Diameter of rods: 4-20mm     
Length: 50-100mm
Cutting Form: Flat,Square,Ball nose, Ball, Corner Radius, Taper Flute, etc.
Flutes No.: 1-7

Application and usage
Suitable to cut Copper, Cast Iron, Carbon steel, Tool steel, Mould steel, Stainless steel, Plastic, Arcylic, etc. 

Coating
Black oxide is an inexpensive black coating. A black oxide coating provides heat resistance and lubricity, as well as corrosion resistance. Coating increases the life of high-speed steel bits.
Titanium nitride (TiN) is a very hard ceramic material that can be used to coat a high-speed steel bit (usually a twist bit), extending the cutting life by three or more times. However, when the bit is sharpened the new edge will not have the benefits of the coating.
Titanium aluminum nitride (TiAlN) is a similar coating that can extend tool life five or more times.
Titanium carbon nitride (TiCN) is another coating also superior to TiN.
Diamond powder is used as an abrasive, most often for cutting tile, stone, and other very hard materials. Large amounts of heat are generated by friction, and diamond coated bits often have to be water cooled to prevent damage to the bit or the workpiece.
Zirconium Gewin has been used as a drill bit coating for some tools under the Craftsman brand name

Product Show:

Packaging & Shipping
Packaging Detail:Standard Export Carton
 Port:Guangzhou,China
 Lead time:

Our main products:

Metal cutting tools: carbide cutting insert, carbide end mill carbide drill carbide taps carbide reamers carbide saw blade Wood working tool: wood cutting insert carbide drill bit saw blade and planer reversible cutting insert carbide saw tips Solid carbide rod for metal & wood Advertising working tools Tungsten carbide preform tools like strips plate block.

Company Information:

Zhuzhou Grewin Tungsten Carbide Tools Co., Ltd  is located in hometown of Chinese carbide industry - Zhuzhou city.  The company has more than 20 years' experience in manufacture, design and sale of various kinds of carbide products, main products include: carbide end mills, carbide rods, indexable inserts, brazed inserts, wire drawing dies, forging dies, wood working tools, saw tips, mining buttons, etc
The company has passed ISO 9001: 2008 quality system, possesses advanced production equipments, complete testing instruments, strong R&D center and QC teams.
With excellent quality, strong technical support, and good after sales service, Grewin Carbide brand products are sold to more than 50 countries in the world, such as Europe, USA, south east Asia, middle east, south America, etc.

The company is dedicated to " WE GROW, WE WIN".  Grewin Carbide is growing up with the World's carbide technology, to meet the demand of our customers from all over the world.

Our advantages:
1  Top quality in China.      
Our quality of steel cutting,  cast iron cutting,  stainless steel cutting inserts is equal to ZCC-CT.     Our quality of Aluminum cutting inserts is equal to Korloy. 
2  Most advanced equipments.      
Our production equipments include "HIP-Sinter furnace,  CNC high precision presser, Five axis machining center,  CVD coating furnace, PVD coating furnace."
3  Strong technical support.      
Our senior engineers are engaged in cutting tools industry for decades, we provide excellent service in grade selection, cuting data recommendation, and solution for your tools.
4   Reputation among our customers.      
We have big customers of carbide inserts in Europe, such as Germany, Italy, UK, Poland, Czech, Ukraine.    In South America, such as Brazil, Peru.    And in Asia, such as India, Iran.
 
We provide our customers with "good quality,  fast delivery, strong technical support,  and excellent after-sales service."

FAQ:
1) When can I get the price?
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority.
 
2) How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our quality.

3) How long can I expect to get the sample?
After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 3-7 days. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.
 
4) How long does the whole procedure be worked out?
After you place an order, the production handling time is about 30 days. We need 15 days to prepare all the stuff then 15 days for manufacturing.
 
5) What about the transportation and delivery date?
Normally we use shipment to transport the goods. It is about 25-40 days. It also depends on which country and port you are in.It could be shorter if you need to send the goods like Asian. If there are some emergencies we can send the goods via air express, as long as you afford the traffic expense.
 
6) Are you a trading company or manufacturer?
We are a professional manufacturer. 
 
7) How about your stock?
We have large quantity products in stock, regular types and sizes are all in stock.
 
8) Is free shipping possible?
We don't offer a free shipping service. We can have a discount if you buy a large number of products.

Any of your inquiry, we are always welcome!