IADC tricone roller cone classification system

4 character code, first 3 characters are numbers, the last is a letter 

1st number is the series. 1 to 3 represent a milled tooth tri cones, 4 – 8 represent TCI tri cones.  The higher the series number  the harder more abrasive the rock formation is. 

2nd number is the relative degree of hardness within a series. The number ranges from 1 – 4, the higher the  number  the  harder the formation 

3rd number represents bearing design and gauge protection. 

• Open bearing 

• Roller bearing air cooled 

• Open bearing gauge protected 

• Sealed roller bearing 

• Sealed roller bearing gauge protected 

• Sealed friction bearing

• Sealed friction bearing gauge protected 

4th character is a letter and describes optional features. There are 16 alphabetic character's each representing the tricones most significant feature

 



437

Soft Formation TCI Tricone Bits china oil tools

The 437 TCI bits are used to drill low compressive strength, very soft formations. TCI bits maximize the use of both conical and chisel tungsten carbide inserts of large diameters and high projection. This cutting structure design, combined with maximum cone offset, results in high bit penetration rates. The deep intermesh of cutter rows prevents bit bailing in sticky formations.









517

Medium Formation TCI Tricone Bits

The 517 features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium-to-medium  hard formation. The HSN rubber O-ring provides adequate sealing for bearing durability.



 

637

Hard Formation TCI Tricone Bits

The 637 bits can be used to drill hard and abrasive formation. Wear-resistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of hemispherical-shaped inserts are used in all rows to provide cutter durability and long life.




 

Model	TCI BIT, STEEL TOOTH BIT
IADC CODE	116 117 126 127 136 137 216 217 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
	417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526  537 547 516 536  535
available sizes:	From 2 7/8 to 26" larger sizes for hole opener bit ,reamer bit
advantage	most favorable price and best quality
bearing type:	sealed bearing and non-sealed bearing HJ(metal sealed journal bearing)   HA (rubber sealed journal bearing aircooled bearing type
Formation or layer	soft ,medium soft ,hard, medium hard, very hard formation
Button size (extra features)	Button bit,saw teeth 1) Y-Conical teeth  2) X-chisel teeth 3)K- wide teeth 4)G- Gague protection
Material	alloy steel, tungsten carbide insert
Delivery terms	By sea or by air
Delivery time	Within 7 days
Product	Size (inch)	IADC CODE
TCI Tricone Bit	3 7/8 ,5 1/2, 6 1/2,7 7/8,8 1/2,8 3/4,10 5/8,12 1/4 13 3/4, 17 1/2,,22, 24,26	417 427 437,517 527 537 617 637 737
Steel Tooth Tricone Bit	3 7/8 ,5 1/2, 6 1/2,7 7/8,8 1/2,8 3/4,10 5/8,12 1/4 13 3/4, 17 1/2,,22, 24,26	115 116 117 215 216 217 315 316 317 325 327
PDC BIT(3 blades,4 blades,5 blades,6 blades)	5 1/2, 6 1/2,7 7/8,8 1/2,8 3/4,10 5/8,12 1/4 13 3/4, 17 1/2,22, 24,26	M223,M322,M316, M222,M416,M122



 Package and transport 

 

Company Information

 We are Hejian Deris Petroleum drilling equipment Co., Ltd Drilling Supplies Marketing Dept. specializes in drill bits, 

drill pipe, Mud pump and stablizers for water well, oil field, construction, geothermal, directional boring, and underground 

foundation work all over the world. Our purpose is to sell the best quality products at the lowest possible price.
We are a professional supplier of new and used(rebuilt) drill bits. Including tricone bits, PDC bits and drill pipe. Various of madel and dimension available. Good 

condition and reasonable price. We also import junk tricone bits and PDC bits.
Our products meet API standard and the bit of international general type with IADC (the international association 

of drilling contractors) coding standards.
The principle of our company is based on the quality of survival. With advanced technology and scientific 

management, our company develops with reputations for providing quality products and best service.




Welcome to our factory to refer to the inspection cooperation egotiations,and work together 

to create a brilliant future.






I'm sure you'll be pleased with our products with competitive price and high quality.

Looking forward to your inquiry as soon as possible




You Satisfaction Is Our Purpose!

        We would like to establish business relations with you !!!

Please contact with us



 

PLs add the information in your inquiry.

1) the size of the tricone bit

2) the IADC tooth model, like 537G

3) PLs tell the drilling information of the layer.

4) PLs tell the quantity.