JW factory 4145H oilfield drill bit adapters/tricone bit joint in stock

  • 1 - 9 Pieces
  • >=10 Pieces
Model Number:
2 3/8''IF to 2 7/8''IF
Support Sea freight
Lead Time:
Quantity(Pieces) 1 - 5 >5
Est. Time(days) 2 Negotiable
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Quick Details
Place of Origin:
Hebei, China
Brand Name:
drill bit adapters
Machine Type:
Drilling Tool
Carbon Steel
Processing Type:
Well Drilling
2 3/8''IF to 2 7/8''IF
Thread type:
box or pin
black or blue
thread sizes:
as buyer's requirements
as buy's requirements
Long Service Life
wooden box
bent angle:
1-2 degree
Europe,America,Africa,Middle East
Supply Ability
Supply Ability:
300 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
drill bit adapters will shipped by standard export packing
Tianjin Port
Lead Time :
Quantity(Pieces) 1 - 5 >5
Est. Time(days) 2 To be negotiated

JW factory 4145H oilfield drill bit adapters/tricone bit joint in stock 



Product Description

Specifications of drill bit adapters

A bit sub is a short, threaded piece of pipe used to adapt parts of the drilling string that cannot otherwise be screwed together because of differences in thread size or design.


DenotationTop junction blockLower junction blockType
Kelly jointKellyDrill pipe jointA or B
Kelly jointDrill pipe jointDrill pipe jointA or B
Drill pipe jointKellyDrill collarA or B
Crossover jointDrill collarDrill collarA or B
Bit jointDrill collarBitA or B
Swivel jointSwivel lower jointKellyType C
Fish jointKellyDrill pipe jointType C
Drill pipe jointFishing toolType C





Model A2 3/8''IF(box or pin)-2 7/8''IF(box or pin)
Model B2 3/8''IF(box or pin)-3 1/2''IF(box or pin)
Model C2 3/8''IF(box or pin)-4 1/2''IF(box or pin)
Model D2 3/8''reg(box or pin)-3 1/2''IF(box or pin)
Model E2 7/8''reg(box or pin)-3 1/2''reg(box or pin)
Model F2 7/8''reg(box or pin)-4 1/2''reg(box or pin)
Model G3 1/2''IF(box or pin)-4 1/2''reg(box or pin)
Model H4 1/2''reg(box or pin)-6 5/8''reg(box or pin)
Model I6 5/8''reg(box or pin)-3 1/2''IF(box or pin)
Model J4''FH(box or pin)-5 1/2'' FH(box or pin)


Product pictures

drill bit adapters/tricone bit joint's picture



Bit sub/drill bit adapters 

Cross-over sub acts for conversion and connection of drill stem component in petroleum,natural gas and geology drilling work. It is used mainly for connecting of upper drill tools and lower drill tools during drilling operations.



Our Services


Delivery Time: Based on order quantity, normally it takes 30 days for production.Only 2 or 3 days if we have stock on your request size.

Quality Control: We have our professional QC and all the products will be strict inspection and testing for every order before shipping out. 

After Services: Technical Support will be available in any time. We could provide the professional suggestion for you.

EX: 1.Select the right most suitable products.

       2. According to the rock types, choosing the face type, button tooth type.

       3. According to the different purpose,. choosing the different body type 


Contact US


All sizes and type can be customized.

If you need,welcome to contact me at any time!


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