China 8 1 2 IADC 417 Tungsten Carbide Insert Rock Drilling Bits

Product Description
TUNGSTEN CARBIDE INSERT BITS
2. Structures
1. Cutting structure this type TCI tricone bits:
The durability of premium tungsten carbide insert is improved with new formulas and new techniques for insert bit.
2. Gauge structure this type TCI tricone bits:
Multiple gauge protection with gauge trimmers on the heel of cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.
3. Bearing structure of this type TCI tricone bits:
High precision bearing with two thrust faces. Ball lock the cone. Hardfaced head bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved.
4. Seal and Lubrication of this type TCI tricone bits:
Premium O-ring, optimal seal compression and curved seal structure can enhance the seal performance. The pressure compensator system and advanced grease can greatly increase
The lubricating reliability.
5. Product Application of this type TCI tricone bits:
It can receive high WOB in the conventional drilling. It is suitable for various formations by matching cutting structure with different tooth shape, tooth density and tooth exposure

Bit Size(in)
Connection
Bit Size(in)
Connection

3 3/8, 3 3/4, 3 7/8
4 1/8, 4 1/4


2 3/8REG
9 1/2,9 5/8 , 9 7/8
10,10 1/2,10 5/8
11, 11 5/8





6 5/8REG

4 3/8, 4 1/2
4 5/8, 4 3/4
4 7/8




2 7/8REG
12,12 1/4, 12 5/16
12 3/8, 12 7/16, 12 5/8
13 1/8,13 3/4, 13 5/8
13 1/2




6 5/8REG
5 1/8, 5 1/2, 5 5/8
5 7/8
6, 6 1/8, 6 1/4
6 1/2, 6 3/4, 6 5/8
6 7/8



3 1/2REG

14 1/2, 14 3/4
15 1/2
17 1/2




7 5/8REG
7 1/2, 7 5/8, 7 7/8
8 3/8, 8 1/2
8 5/8, 8 3/4

4 1/2REG

20, 22, 24, 26

7 5/8REG



IADC CODE
(MT) 116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125
135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347

(TCI)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