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Kelly
3 in
Design Specifications
Length (ft) 40
Standard or optional Standard
Top Connection Connection : 6 5/8REG
OD(in) : 7 3/4
Operating Parameters
Bottom Connection Connection : NC26
OD(in) : 3 3/8
Across Corners DC (mm) 85.7
ID (in) 1 1/4
Weight (kg) 462





API Hexagonal Kelly,Product Schematic Diagram.

六方钻杆示意图.jpg

Kelly is the driven part of the whole drill string.

Kelly is divided into Square Kelly and Hexagonal Kelly. WOLFNI Kelly all conform to API Spec7-1.

The length of Kelly extends from 11meters, 12meters,16meters,and to the longest 27 meters.(connected with tool joint of high torsion resistance)



API Hexagonal Kelly

Size

(in)


Length

(ft)

Standard 

or 

optional

Top ConnectionBottom ConnectionAcross Corners

ID

(in)


Weight (kg)
Connection

OD

(in)

Connection

OD

(in)

DC 

mm

3"
40Standard6 5/8REG7 3/4NC263 3/885.71 1/4462
40Optional4 1/2REG5 3/4NC263 3/885.71 1/4431
3 1/2"
40Standard6 5/8REG7 3/4NC314 1/8100.81 3/4561
40Optional4 1/2REG5 3/4NC314 1/8100.81 3/4531
4 1/4"40Standard6 5/8REG7 3/4NC384 3/4122.22 1/4765
40Optional4 1/2REG5 3/4NC384 3/4122.22 1/4735
5 1/4"40Standard6 5/8REG7 3/4NC466 1/4151.631069
40Standard6 5/8REG7 3/4NC506 3/8151.63 1/4996
6"40Standard6 5/8REG7 3/45 1/2FH7173.03 1/21345
40Standard6 5/8REG7 3/4NC567173.03 1/21343


With advanced sales network, our products

export to Russia, Germany, Czech Republic,

Iran, UAE,  Kuwait, India, Kazakhstan, 

Indonesia, Algeria, Argentina, Brazil, etc.


六方钻杆图纸.jpg


1. Product: Hexagonal drill kelly

2. Supply range: 3"- 6"

3. Packing: anti-rust package, steel shelf with plastic bags

4. Standard: API Spec 7-1 or SY/T6509 Standard. 

5. Delivery time: within 30 days 

6. Test: Ultrasonic test, tensile test, impact test, hardness test, etc.

7. Mechanical Propriety :conforming to API 7-1 and 5D 



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