We offer a complete line of Tungsten Carbide Tri-cones in sizes ranging from 2-15/16 to 17-1/2 inches, which are described in detail below.

When ordering, be sure to specify either air or liquid circulation. Bits for liquid circulation are furnished unless otherwise specified.

To help you to order the right bits, use the following guidelines to match the bit design to the formation you will be drilling.
44 -- hard shales, sandstones, limestones, etc.
52 -- the above formations but with higher compressive strengths.
54 -- tight and well cemented formations.
62 -- highly friable and broken formations with higher than normal          silica contents.
64 -- formations like weathered granite, highly cemented          conglomerates and other rocks with higher shear or yield          strengths.
 
3-CONE ROLLER ROCK BITS:
Tungsten Carbide Insert
 
BIT CODE FORMATION TYPE
 BIT DIAMETER
   in.             mm.
44
52
54
62
64
PIN
SIZE
 3 7/8         98.4  

 X
  

 X
  

 N 4 thd
 4 3/4       120.7  

 X
  

X
  

2 7/8 API Reg
 4 7/8       123.8  

 X
  

X
    
 5 1/8       130.2

X

 X
  

X
    
 5 1/4       133.4

X

 X
  

X
    
 5 5/8       142.9

X

 X
  

X
  

3 1/2 API Reg
 5 7/8       149.2

X

 X
  

X
    
 6              152.4

 X

 X
  

X
    
 6 1/8       165.6

 X

 X
  

X
    
 6 1/4       158.8

 X

 X
  

X
    
 6 3/4       171.5

 X

 X

X

X

X
  
 7 1/2       190.6

 X

 X

X

X

X

 4 1/2 API Reg
 7 7/8       200.0

 X

 X

X

X

X
  
 9               228.6

 X

 X

 X

X

X
  
 9 7/8       250.8

 X

 X

 X

X

X

6 5/8 API Reg
10 5/8      269.9

 X

 X

 X

 X

 X
  
12 1/4      311.2

 X

 X

 X

 X

 X
  
13 3/4      349.3

 X

 X

 X

 X

 X
  
15             381.0

 X

 X

 X

 X

 X
  
17 1/2      444.5

 X

 X

 X

 X

 X

7 5/8 API Reg
 
Sealed Journal Bits
Techline also offers a line of quality sealed journal bearing bits to meet the demands of the oil and gas industry.
IADC Code Number Designations
The first digit designates bit type and hardness of formation to be drilled: (1-2-3 are the numbers to indicate milled tooth bits from softest to hardest formation type)
The second digit is a subcategory for the formation to be drilled ranging from SOFTEST (1) to HARDEST (9)
The third digit designates features of the bit:
1 = Standard Roller Bearing
2 = Roller Bearing Air Coiled
3 = Roller Bearing/Gage Protected
4 = Sealed Roller Bearing
5 = Sealed Roller Bearing/Gage Protected
6 = Sealed Friction Bearing
7 = Sealed Friction Bearing/Gage Protected
8 = Directional
 
3-CONE ROLLER ROCK BITS;
MILLED TOOTH AND TUNGSTEN CARBIDE INSERT
 
BIT CODE FORMATION TYPE
BIT
DIAMETER
  in.           mm.
IADC
115/116/117
126/136
IADC
214/215/
236
IADC
312/314
IADC
417/433/
435/437
IADC
515/517/527
533/525/537
IADC
625/627/
637
IADC
737/745/
747
 4 3/4   120.7  

 X
          
 5 5/8   142.9  

 X

X
  

X
    
 5 3/4   146.1  

 X
    

X
    
 5 7/8   149.2  

 X
    

X
    
 6          152.4  

 X
    

X
    
 6 1/8   155.6        

X
    
 6 1/4   158.8

 X

 X
    

X
    
 6 1/2   165.1

 X

 X
    

X
    
 6 3/4   171.5

 X

 X
    

X
    
 7 1/2   190.5

 X

 X

X

X

X

X

X
 7 5/8   193.7

 X

 X

X

X

X
    
7 7/8    200.0

 X

 X

X

X

X
    
 8 1/2   215.9

 X

 X

 X

 X

X

X

X
 8 3/4   222.3

 X

 X

X

X

X

X

X
 9 5/8   244.5

 X

 X

 X

X

X

X

X
 9 7/8   250.8  

 X

 X

X

X

X

X
10 5/8  269.9

X

 X

 X

X

X

X

X
11         279.4

X

 X

 X

X

X

X
  
11 5/8  295.3

X

X

X

X

X

X
  
12 1/4  311.2

X

X

 X

X

X

X
  
13 3/4  349.3

X

X

X

X

X

X
  
14 3/4  374.7

X

X

 X

X

X

X
  
15         381.0

X

X

 X

X

X

X
  
15 1/2  393.7  

X
  

X

X

X
  
16         406.4  

X
  

X

X

X
  
17 1/2  444.5

X

X
  

X

X

X
  
 
To order, or to ask any questions about our prices, inventory, or services,
call us at (406) 782-9604, send a fax to (406) 782-9605,
or send e-mail to us at techline@theglobal.net.