API 7-1 Standard Oilfield Drill Collar Sub and Crossover Sub for Sale

• Surface Treatment: Spray-Paint
• Manufacturing Process: Casting
• Material: Carbon Steel
• Diameter: 2 3/8′′if to 2 7/8′′if
• Thread Type: Box or Pin
• Matrial: 4145h
• Model NO.: all type
• Color: Black or Blue
• Thread Sizes: as Buyer′s Requirements
• Length: as Buyer′s Requirements
• Advantage: Long Service Life
• Packing: Wooden Box
• Bent Angle: 1-2 Degree
• Market: Europe,America,Africa,Middle East
• Transport Package: Wooden Case
• Specification: all type
• Trademark: JW
• Origin: Cangzhou, Hebei, China
• HS Code: 8431431000
• Production Capacity: 50000PCS/Year

Product Description

API 7-1 standard oilfield drill collar sub and crossover sub for sale

1.Product description
Specifications of drill collar sub/drill bit sub 
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.
 

Denotation	Top junction block	Lower junction block	Type
Kelly joint	Kelly	Drill pipe joint	A or B
Kelly joint	Drill pipe joint	Drill pipe joint	A or B
Drill pipe joint	Kelly	Drill collar	A or B
Crossover joint	Drill collar	Drill collar	A or B
Bit joint	Drill collar	Bit	A or B
Swivel joint	Swivel lower joint	Kelly	Type C
Fish joint	Kelly	Drill pipe joint	Type C
	Drill pipe joint	Fishing tool	Type C

 

Material	4145H
Model A	2 3/8''IF(box or pin)-2 7/8''IF(box or pin)
Model B	2 3/8''IF(box or pin)-3 1/2''IF(box or pin)
Model C	2 3/8''IF(box or pin)-4 1/2''IF(box or pin)
Model D	2 3/8''reg(box or pin)-3 1/2''IF(box or pin)
Model E	2 7/8''reg(box or pin)-3 1/2''reg(box or pin)
Model F	2 7/8''reg(box or pin)-4 1/2''reg(box or pin)
Model G	3 1/2''IF(box or pin)-4 1/2''reg(box or pin)
Model H	4 1/2''reg(box or pin)-6 5/8''reg(box or pin)
Model I	6 5/8''reg(box or pin)-3 1/2''IF(box or pin)
Model J	4''FH(box or pin)-5 1/2'' FH(box or pin)

2.Bit sub/drill collar sub's picture




 

 

4.Application
Bit sub/crossover sub /drill collar sub
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.

5.Our service
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 

6.Contact us
All sizes and type can be customized.
If you need,welcome to contact me at any time.