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Quick Details

  • Place of Origin: Hebei, China (Mainland)
  • Brand Name: Kingdream Deris Lilin
  • Model Number: IADC 117-837
  • Type: Drill Bit
  • Machine Type: Drilling Tool
  • Certification: API
  • Material: Carbide
  • Processing Type: Forging
  • Use: Well Drilling
  • commodity: second hand roller cone bit
  • Application: gas,oil,water well drilling
  • model number: IADC537
  • Formation: soft to hard formation
  • bearing type: journal bearing
  • sealed type: rubber&metal sealed
  • weight: 5kg~810kg
  • guarantee period: 4 years
  • size: 3"~26"
  • Market: USA,Middle East,South Africa

Packaging & Delivery

Packaging Details wooden case,iron box or as your requirements
Delivery Time within 7 days after receving the deposit

Factory sealed 8 1/2" drill bit/second hand roller cone bit for oil well drilling 



1.Product name:second hand roller cone bit/ 8 1/2" drill bit 

2.Sizes:3 1/2"~26"

3.IADC code:IADC117-837

4.Certification: ISO9001


6.Delivery time:5-7days after receiving the deposit 

7.Packing:Wooden case,iron box or as your requirements.



2.full sizes and types:

IADC code

(the main)

417 427 437 517 527 537 617 627 637 

737 837 832 415 425 435 445 525 625 

635 416 427 436 446 447 516 526 536 

535 537 547 

Available size

From 2 7/8” to 26”

Larger sizes for hole opener bit,reamer bit

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 fratures)

Button bit,saw steel

1) Y-Conical teeth

2) X- chisel teeth

3) K- wide teeth

4) G- Gauge protection


Tungsten Carbide

Delivery terms

By sea or by air


Petroleum & gas,water well, mining and tectonic industries,oil field,

construction,geothermal,directional boring,

and underground foundation work


fumigation free of wooden case

Payment Term


(30% downpayment and 70%balance before shipping.)


1 Piece

Supply Ability

1000 Pieces/month

Delivery Time

within 7-15 work days

Main  market 

Canada  USA  Middle east  Africa  Europe  

3.Photos of 8 1/2" tricone drill bit:
second hand roller cone bit:


4.Packing:wooden case or as your requirements

Transportation:by sea, by air or as your requirements


5.Welcome to our factory to refer to the inspection cooperation negotiations,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.


6.The following is our contact information:

If you want to know our product,please kindly contact me.

I will provide you all the information what you want to know.

Transaction History of the Supplier

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Transaction Details

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Trade Assurance
China (Mainland) | Trading Company
Transaction Level:
Supplier Assessments:
1 Transactions 900+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $31,000
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