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Drilling Bits

The basic information
1. Technology: full grounded or half grounded
2. Application: for drilling metal
3. Surface finish: Ti-coated, black oxide, amber finished, bright finished, grey finished
4.Material: tungsten carbide
5. Standard: DIN 338, DIN 1897, DIN 340, DIN 1869, DIN 341, DIN 345, DIN 1870
6. Advantage: fast and smooth drilling

Quantity:
  • FOTMA
Our company are a professional manufacturer of carbide drilling bits. In addition, our company mainly produces all kinds of tungsten carbide cutting tools, wear parts,  mining tools, drawing dies, cutting tool tips, and various non-standard tungsten carbide, drills, carve drills, tool drills and so on. Those products are sold to all over the world such as Europe, USA, Australia and other countries. All the products are manufactured by our advanced processes and equipment and superior raw materials.
 
Our advantages:
1. Our company have a few senior engineers who specializes in tungsten carbide field for many decades. We can select
    appropriate grades and composition according to your application and your requirements.
2. For your non-standard parts,we have strong ability to make mold by ourselves and produce them according to your     
    requirements.
3. Our company have the strict quality control and assurance system to guarantee the consistent great quality. 
 
 Drilling bits 
Item types Tapered chisel bits Tapered cross bits Tapered button bits
Diameter
(mm)
20-80 30-60 28-41

For class 
of rock
8-12/10-14
14-16/16-18
11-15  
 
Tip size
Height*width
(mm)
10*7 ;12*6;13.5*8/9.2;
15*9/9.8; 22*16*10;
12*12*8 ;13*12*8;
15*12*8;22*16*10
 
 
No.*button
diameter
front  
 
 
 
1*8 ;2*7 ;2*8
gauge  
 
 
 
3*8 ;4*7 ;5*9
Taper angle(degree) 4° /  7° 30°35°40°
Weight(kg) 0.17-1.40 0.29-1.19 0.24-0.66

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