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Home » Products » Kelly Drill Rod
Related Searches: Kelly Drill Rods | China Kelly Drill Pipe | Drilling Kelly Bar
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Kelly Drill Rod

Kelly Drill Rod
The Kelly drill pipe is used to transfer the torque of equipment to the drill pipe. We provide Kelly drill rod is suitable for most of the rig. It is used in production of DZ40. And the hardness reaches HRC45-52 after surface heat treatment. Drilling Kelly bar has excellent comprehensive mechanical properties, and more wear-resisting.

Features of Kelly Drill Rod

1. Thread sealing grease should be used when connecting the pipe and the joint, and hammer knocking should be prohibited.
2. During the relocation of Kelly drill pipe, the thread protector should be screwed on the threaded parts so as to protect it from damages.

Parameters of Kelly Drill Rod

SPEC of Kelly Drill Pipe
Cross Section Shape
Length Overall (mm)
Pipe Body ID (mm)
Arc Slot Size (mm)
Top Thread (LH)
Bottom Thread
Surface Hardening
Thread Pitch (Number of Thread per Inch) (mm)
Taper
Base Level Mid-Diameter (mm)
Height of Thread
(mm)
Length(mm)
hread Pitch (Number of Thread per Inch) (mm)
Taper
Base Level Mid-Diameter(mm)
Height of Thread(mm)
Length(mm)
Φ45×38×Φ25

4
25
R6.5
6.35(4)
—
31.5
1.5
43
2.54(10)
1:16
40.664
1.412
50
HRC45-52
Φ51×46×Φ25

6
25
R7
6.35(4)
—
31.5
1.5
45
2.54(10)
1:16
40.664
1.412
50
HRC45-52
Φ59×53×Φ28

4.5
28
R7.75
2.54(10)
1:16
48.664
1.412
55
2.54(10)
1:16
48.664
1.412
55
HRC45-52
Φ59×53×Φ28

4.8
28
R7
4.233(6)
1:5
40.808
2.524
50
2.54(10)
1:16
48.664
1.412
55
HRC45-52
Φ59×53×Φ28

6
28
—
2.54(10)
1:16
48.664
1.412
55
2.54(10)
1:16
48.664
1.412
55
HRC45-52
Φ65×55×Φ28

7
28
—
2.54(10)
1:16
48.664
1.412
55
2.54(10)
1:16
48.664
1.412
55
HRC45-52
Φ89×75×Φ45

7
45
—
3.175(8)
1:16
65.576
1.81
60
3.175(8)
1:16
65.576
1.81
60
HRC40-45
Φ89×79×Φ37

5.5
37
R12
4.233(6)
1:5
48.808
2.524
50
2.54(10)
1:16
48.664
1.412
65
HRC40-45
Φ89×79×Φ45

6
45
—
10
—
71
2
85
10
—
71
2
85
HRC40-45
Φ89×79×Φ45

7
45
—
3.175(8)
1:16
65.576
1.81
60
3.175(8)
1:16
65.576
1.81
60
HRC40-45
Φ89×79×Φ45

9
45
—
3.175(8)
1:16
65.576
1.81
60
3.175(8)
1:16
65.576
1.81
60
HRC40-45
The bottom thread parts quenching and tempering treatment.
We can apply designated connection and length as per customers' requirement.
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