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| We supply API certified oilfield drilling rigs, workover rigs, drawworks, wire rope, drill line, DC motor, AC motor, YM Hydranlic Catheads, ZP series rotary table, hydraulic winches, air winches, hydraulic power units, rotary hoses, crown block, sheave, traveling block, hooks, deadline anchor, top drive spare parts, drill pipe elevator, casing elevator, drill collar elevator, tubing elevator, sucker rod elevator, slip type elevator, single joint elevator, SE spider, links, perfection link, manual tong, casing tong, dies, power slip, manual slip, Kelly bushing, iron roughneck, power tong, hydraulic power tong unit, Kelly spinner, ram BOP, annular BOP, diverter, BOP control system, BOP control line, Conflex hose, spacer spools, adapter spools, double studded adapter flanges, drilling spool, choke and kill manifold, gate valves , butterfly valves, shale shakers, screens, desander, Centrifugal pumps, Vacuum degassers, Mud cleaners, Desilters, Shearing pumps, Centrifuges, Agitators, Mixing pumps, Poorboy degasser/Mud gas separator, screw pump, Venturi hopper, Submersible slurry pump, Flare igniter, Mud gun, Mud tanks, F-Series Triplex Mud Pump, 3NB Series Triplex Mud Pump, Unitized Mud Pump Package, Mud pump Spare parts such as Discharge Filter Assembly, Clamp of Mud Pump, Piston Assembly, Cylinder Head and Valve Cover, Guide plate, Plug Board Assembly, Air chamber assembly, Shear Relief Valve, Liner of Mud Pump, Cross Head of Mud Pump and Other parts Liner hanger, Cement head, Float collar and float shoe, Cementing plug, Casing Packer, Casing Centralizer, Mill shoe, Stop collar, Double pump cementing units, fracturing pumping units, Completion tools, pumping units, sucker rods, sucker rod pumps, screw pumps, submersible motors, X-mas tree, tubings, drill pipes, drill collars, heavy weight drill pipes, Kelly, stabilizers, drilling jars, bit subs, X-over subs, hole openers, casing and tubing drifts, casing scrapers, drilling instrument and electrical System, oilfield camp houses, drilling instrumentation and electrical system. Please send email to us if you need any information. |
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| Tubings |
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Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes.
The tubing production processing is similar to the process of casing production.
Tubing pipes typically have diameters of 26.67 mm to 114.3 mm.
Quality Control
We have implemented stringent quality control tests to inspect raw materials and examine products in every stage of the manufacturing process.
The quality control system includes:
• Size and surface inspection. Our quality assurance staff inspects the size and surface of the tubes to ensure that tubes meet required standards.
• Non-destructive test. This test is conducted to ensure that no damage occurred to the tube during upsetting, heat treatment and hot straightening treatments. For the blind areas at the end of the pipes, a magnetic power detectoscope is used to conduct the tests. If damage within the pipe is found by the detectoscope, the quality assurance staff will investigate the area further with a portable ultrasound detectoscope.
• Thread inspection. The production staff physically examines the thread after the threading stage of the production process to ensure that it accurately conforms to the required standards.
• Hydrostatic test. Pipes are rolled onto a hydrostatic testing machine where water is pumped into the pipes to ensure that the pipes can withstand the requisite internal pressure and to confirm that there is no leakage.
• Drifting test. This test is conducted to inspect the straightness of the pipes and to determine if any protrusions exist along the inner walls.
• Physical and chemical analysis. This test is conducted to analyze the chemical composition, mechanical performance and metallographic structure of pipe materials.
• Hardness and pressure test. Pipes are physically tested through weld finishing and hardness tests to ensure that the pipes can withstand the requisite external pressure and exhibits the required hardness before final coating.
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API-5CT Series：Tubing
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Size
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Grade
|
|
|
OD
mm(in)
|
Wt
mm
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Nominal weight per unit length(with thread and coupling)kg/m
|
|
|
NUE
|
EUE
|
H40
|
J55
|
L80
|
N80---1类、Q
|
C90
|
T95
|
P110
|
|
26.67
(1.050)
|
2.87
|
1.70
|
1.79
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
|
3.91
|
|
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
|
33.40
(1.315)
|
3.38
|
2.53
|
2.68
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
|
4.55
|
3.26
|
3.33
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
|
42.16
(1.660)
|
3.18
|
|
|
P
|
P
|
|
|
|
|
|
|
3.56
|
3.42
|
3.57
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
|
4.85
|
4.51
|
4.57
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
|
48.26
(1.900)
|
3.18
|
|
|
P
|
P
|
|
|
|
|
|
|
3.68
|
4.09
|
4.32
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
|
5.08
|
5.43
|
5.55
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
|
6.35
|
6.58
|
|
|
|
P
|
|
P
|
P
|
|
|
7.62
|
7.66
|
|
|
|
P
|
|
P
|
P
|
|
|
52.40
(2.063)
|
3.96
|
|
|
P
|
P
|
P
|
P
|
P
|
P
|
|
|
5.72
|
|
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
|
60.32
(2-3/8)
|
4.24
|
5.95
|
|
P/U
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
|
|
4.83
|
6.85
|
6.99
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
6.45
|
8.63
|
8.85
|
|
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
7.49
|
9.82
|
|
|
|
P
|
|
P
|
P
|
|
|
8.53
|
10.94
|
11.09
|
|
|
P/U
|
|
P/U
|
P/U
|
|
|
73.02
(2-7/8)
|
5.51
|
9.52
|
9.67
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
7.01
|
11.61
|
11.76
|
|
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
7.82
|
12.80
|
12.95
|
|
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
8.64
|
13.91
|
14.06
|
|
|
P/U
|
|
P/U
|
P/U
|
|
|
9.96
|
15.63
|
|
|
|
P
|
|
P
|
P
|
|
|
11.18
|
17.11
|
|
|
|
P
|
|
P
|
P
|
|
|
88.90
(3-1/2)
|
5.49
|
11.46
|
|
P/U
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
|
|
6.45
|
13.69
|
13.84
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
7.34
|
15.18
|
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
|
|
9.52
|
18.90
|
19.27
|
|
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
10.92
|
21.28
|
|
|
|
P
|
|
P
|
P
|
|
|
12.09
|
23.07
|
|
|
|
P
|
|
P
|
P
|
|
|
13.46
|
25.30
|
|
|
|
P
|
|
P
|
P
|
|
|
101.60(4)
|
5.74
|
14.14
|
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
P/N
|
|
|
6.65
|
|
16.37
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
P/U
|
|
|
8.38
|
19.64
|
|
|
|
P
|
|
P
|
P
|
|
|
10.54
|
23.96
|
|
|
|
P
|
|
P
|
P
|
|
|
12.70
|
28.13
|
|
|
|
P
|
|
P
|
P
|
|
|
15.49
|
33.04
|
|
|
|
P
|
|
P
|
P
|
|
|
114.30
(4-1/2）
|
6.88
|
18.75
|
18.97
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
P/N/U
|
|
|
8.56
|
22.62
|
|
|
|
P
|
|
P
|
P
|
|
|
9.65
|
25.30
|
|
|
|
P
|
|
P
|
P
|
|
|
10.92
|
28.13
|
|
|
|
P
|
|
P
|
P
|
|
|
12.70
|
32.00
|
|
|
|
P
|
|
P
|
P
|
|
|
14.22
|
35.27
|
|
|
|
P
|
|
P
|
P
|
|
|
16.00
|
38.84
|
|
|
|
P
|
|
P
|
P
|
|
|
注：P-Plain End、N-NUE with thread and coupling、U-EUE with thread and coupling
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Quality control tests are conducted on finished products. The quality assurance staff checks to make sure that there are no visible defects and that all finished pipes accurately conform to the intended parameters and lengths. Over 200 quality assurance staff members are equipped with advanced testing equipment. We provide regular training to our staff and have established a set of mandatory internal procedures and standards.
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