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  Home >> PETROLEUM MACHINERY>> Drill Pipe >> Non-dig Drill Pipe    

Non-dig Drill Pipe



Non-dig drill pipe is a tool applicable for transferring torque and tension of drillers in the process of directional drilling construction. Due to the fact that it has to bear torsion, tension, bending, friction and vibration in the process of directional construction, the requirements for processing process are very strict.

    The raw materials selected by our company are all the alloy structure steels for geographical usage produced by Baogang Steel. After laboratory tests, after laboratory tests, both ends of a pipe are upsetted and proceeded to overall heat treatment, then friction welded. Before finished drill pipes are plated and packaged, a series of tests have to be implemented including hardness, metallurgical structure, physical performances, etc.

Non-dig drill pipe parameters

Size
Nominated weight
(lb)(kg)
Length
(ft)(m)
OD
(in)(mm)
Pipe wall thickness
(in)(mm)
OD of thickening part
(in)(mm)
Thick 
type
Grade
Min. bend 
radius
(m)
Max torque
(kn/m)
2
50
56.2
25.5
10
3
1.968
50.8
0.256
6.5
2.24
57
IEU
S135
38
4.8
23/8
60
79.4
36
10
3
2.375
60.32
0.295
7.5
2.657
67.5
IEU
R780
42
6.5
S135
36
7
27/8
73
101.4
46
10
3
2.875
73.02
0.315
8.0
3.15
80
IEU
R780
65
13
31/2
89
220.4
100
10
4.5
3.5
88.9
0.394
9.99
3.62
92
IEU
R780
75
19

Tensile property

Group
Grade
Yield strength
Tensile strength
Min.
Max.
Min.
PSI
Mpa
PSI
Mpa
PSI
Mpa
1
R780
75000
517
105000
724
100000
689
2
E-75
75000
517
105000
724
100000
689
3
X-95
95000
655
125000
862
105000
724
G-105
105000
724
135000
931
115000
793
S-135
135000
931
165000
1138
145000
1000
 


Copyright: Xi'an G&L Machine Tools Co., Ltd.
Address: No.31,Gaoxin Road, Xi'an, Shaanxi Province, China Tel./Fax: +86-29-81328442 Email: sumoonlu@gmail.com
website: www.cnmachinetools.com