China Hotsale 8 1/2 iadc 637 Tricone tungsten carbide drill bits Manufacturer
Company profile
Guangtong company was founded three decades, and always adhere to market-oriented, innovation as a starting point, to provide customers with a more comprehensive product for the drilling industry to reduce costs. Our staff put first-class management, first-class quality, excellent service as our eternal pursuit. The main products are drilling scraper, drill collars, fittings, assembly reamer.

Product information
Tricone tungsten carbide drill bits Manufacturer
The 637 bits can be used to drill hard and abrasive formations . Wearresistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of bemisphericalshaped inserts are used in all rows to provide cutter durability and long life.
Size | 8 1/2″ (215.9mm) |
IADC | 637 |
Bearing Type | Elastomersealed journal bearing |
Thread Connection | 4 1/2 reg pin |
WOB (KN/ mm) | 0.50~1.10 |
RPM (r/ min) | 200~40 |
Applicable Formations | hard formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc. |

Other
ADC | 437 | 517 | 537 | 617 | 637 | 737 | |
WOB | KN/ mm (bit dia.) | 0.5-0.75 | 0.5-0.85 | 0.5-0.85 | 0.55-0.85 | 0.55-0.85 | 0.55-0.85 |
Lb/ in (bit dia.) | 2860-4280 | 2860-4860 | 2860-4860 | 3140-4860 | 3140-4860 | 3140-4860 | |
r.p.m | 70-45 | 70-45 | 70-45 | 70-45 | 60-40 | 60-40 | |
Avaliable sizes
Size | Bit Type | |
inch | mm | |
6 | 152.4 | 517, 537617, 637 |
6 1/2 | 165.1 | 517, 537 |
7 7/8 | 200.0 | 517527547617627637 |
8 1/2 | 215.9 | 437447517537617627637 |
9 1/2 | 241.3 | 437517537547617 |
9 5/8 | 244.5 | 437517, 537547617 |
9 7/8 | 250.8 | 437517, 537547617 |
12 1/4 | 311.1 | 437517, 537547617627637 |
17 1/2 | 444.5 | 517537617627637 |
24 | 609 | 417517, 537547617637 |
26 | 660 | 417517, 537547617637 |
Pictures show



Advantage
1. High-strength, high flexibility, high temperature, high wear resistance.
2. High-precision metal seal.
3. Locking roller ball, to adapt to high-speed.
4. The use of high strength high toughness carbide teeth.
5. Hours in the rotary cone bit with the impact, crushing and shearing the role of broken rock.
6. Cone bit to adapt to the soft, medium and hard of various strata.
7. Reasonable price and long working life.
Any inquiry is welcomed here .
1) How to send money to us ?
We can send you our bank account information after the contract is made . By T/ T , Western union ....
2) What is the MOQ ?
mall trial order is acceptable , like 1pc, 2 pcs....
3) Inspection is possbile ?
Yes, you are welcome to our company at any time or you can make inspection through Third inspection agent , like SGS , BV and so on .
4) How to transport the bits ?
By sea , by air , by DHL, by UPS and so on ....
Do you have any questions ? Please don't hesitate to ask me and you will get the satisfactory response once you contact us .