7 5/8" api pin iadc 517 tungsten carbide tooth roller rock 17 1/2'' tricone-rock-bits

1.Button bit: small tooth , big tooth , conical inserts , chisel inserts

2.Types: steel tooth tricone bit (mill tooth tricone bit) and tricone bit (tungsten carbide inserted tricone bit) , both of used for mining pilling , water well drilling or oil well drilling.

3.Sealed bearing structure : Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed. The advanced metal seal package will improve the reliability and durability of bearing seal.

4.Cutting structure

The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.    The wear resistance of teeth is enhanced with premium tungsten carbide hard facing on the tooth surfaces for steel tooth bit.

5. Gauge Structure

Multiple gauge  protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone ,tungsten carbide inserts and hard facing on the shirttail increases gauge holding capability and bearing life

6.Bearing structure  

High precision bearing with two thrust faces. Balls lock the cone . Cone bearing inlaid with friction-reducing alloy and then  silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.

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.

 

 

 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.