| After-sales Service: | After Sale Service |
|---|---|
| Warranty: | 12 Months |
| Connection: | Female |
| Structure: | Round |
| Flexible or Rigid: | Rigid |
| Material: | Alloy |
| Samples: |
|---|
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier API 5CT Casing Coupling and Tubing Coupling
Casing and Tubing are produced in accordance with API specifications. The heat-treatment lines are completed with advanced equipments and detecting instruments that can handle casing in 5 1/2" to 13 3/8" (φ114~φ340mm) diameters and tubing in 2 3/8" to 4 1/2" (φ60~φ114mm) diameters. The annual heat-treatment capacity is about 150 thousand tons. The thread machining line can handle all API grade tubings, casings, couplings and screen pipes in 2 3/8" to 20" (φ60~508mm) diameters and with annual capacity of 300 thousand tons.
Raw Material Selection
Mechanical test including tensile strength
Impact test
Chemical properties control
Sulfide stress cracking test (for Material grades in C90 or T95)
Size tolerances, OD, Wall Thickness, Length and Straightness
Threads control, threads quantity per inch, threads angle etc (Premium threads option will be more rigorous)
Heat treatment
Additional markings
Material certification
Product Specification Level (PSL-2 or PSL-3)
|
Descriptions and size
|
Type of Thread
|
O.D*L(mm)
|
Weight(kg)
|
|
|
Tubing Coupling
|
2-3/8
|
NUE
|
73.02*107.95
|
1.28
|
|
2-3/8
|
EUE
|
77.80*123.82
|
1.55
|
|
|
2-7/8"
|
NUE
|
88.90*130.18
|
2.34
|
|
|
2-7/8"
|
EUE
|
93.17*130.35
|
2.4
|
|
|
3-1/2"
|
NUE
|
107.95*142.88
|
3.17
|
|
|
3-1/2"
|
EUE
|
114.30*146.05
|
4.1
|
|
|
4
|
NUE
|
120.65*146.05
|
4.35
|
|
|
4"
|
EUE
|
127.00*152.40
|
4.82
|
|
|
4-1/2"
|
NUE
|
132.08*155.58
|
4.89
|
|
|
4-1/2"
|
EUE
|
141.30*158.75
|
6.05
|
|
|
API Casing CouplingsShort Thread
|
Coupling Size (inches)
|
Min Length (inches)
|
Weight per Coupling (lbs)
|
Palletized Carton Quantity
|
Palletized Carton Weight
|
|
4 1/2
|
6.25
|
7.98
|
408
|
3255
|
|
|
5
|
6.5
|
10.27
|
300
|
3164
|
|
|
5 1/2
|
6.75
|
11.53
|
276
|
3182
|
|
|
6 5/8
|
7.25
|
20.1
|
154
|
3095
|
|
|
7
|
7.25
|
18.5
|
170
|
3145
|
|
|
7 5/8
|
7.5
|
27.12
|
120
|
3254
|
|
|
8 5/8
|
7.75
|
35.78
|
108
|
3578
|
|
|
9 5/8
|
7.75
|
39.75
|
80
|
3180
|
|
|
10 3/4
|
8
|
45.81
|
72
|
3298
|
|
|
11 3/4
|
8
|
49.91
|
60
|
2994
|
|
|
13 3/8
|
8
|
56.56
|
54
|
3054
|
|
|
16
|
9
|
76.96
|
-
|
-
|
|
|
20
|
9
|
95.72
|
-
|
-
|
|
API Casing Couplings Long Thread
|
Coupling Size (inches)
|
Min Length (inches)
|
Weight per Coupling (lbs)
|
Palletized Carton Quantity
|
Palletized Carton Weight
|
|
4 1/2
|
7
|
9.15
|
408
|
3733
|
|
|
5
|
7.75
|
12.68
|
300
|
3804
|
|
|
5 1/2
|
8
|
14.15
|
276
|
3905
|
|
|
6 5/8
|
8.75
|
25
|
154
|
3850
|
|
|
7
|
9
|
23.88
|
160
|
3820
|
|
|
7 5/8
|
9.25
|
34.46
|
110
|
3790
|
|
|
8 5/8
|
10
|
47.77
|
80
|
3822
|
|
|
9 5/8
|
10.5
|
56.11
|
68
|
3815
|
|
|
9 5/8
|
10.5
|
56.11
|
68
|
3815
|
|
API Casing Couplings Buttress Thread
|
Coupling Size (inches)
|
Min Length (inches)
|
Weight per Coupling (lbs)
|
Palletized Carton Quantity
|
Palletized Carton Weight
|
|
4 1/2
|
8.875
|
10.03
|
380
|
3811
|
|
|
5
|
9.125
|
12.9
|
290
|
3741
|
|
|
5 1/2
|
9.25
|
14.02
|
276
|
3869
|
|
|
6 5/8
|
9.625
|
24.27
|
156
|
3786
|
|
|
7
|
10
|
23.15
|
164
|
3797
|
|
|
7 5/8
|
10.375
|
34.88
|
108
|
3767
|
|
|
8 5/8
|
10.625
|
45.99
|
85
|
3909
|
|
|
9 5/8
|
10.625
|
51.06
|
74
|
3778
|
|
|
10 3/4
|
10.625
|
56.75
|
65
|
3688
|
|
|
11 3/4
|
10.625
|
61.79
|
60
|
3707
|
|
|
13 3/8
|
10.625
|
70.04
|
54
|
3782
|
We also offer product as follow:
Crossover Sub
The connections of the Subs are available in the following types of connections:
Tubing Pup Joint
Standard: API 5CT & 5B
Size: 2-3/8, 2-7/8, 3-1/2, 4, 4-1/2 inch
Wall thickness: according to API 5CT
Typical Lengths: 1, 2, 3, 4, 6, 8, 10,12 ft
Grade: J55/K55/N80/L80/P110
Connection: EUE and NUE.
Dongying Zhaoxin Industry and Trade Co.,Ltd is an ISO-9001, ISO-14001, OHSAS-18001 certified company and has all the quality systems in place for design, planning,manufacturing and quality monitoring & traceability to ensure that Dongying Zhaoxin Industry and Trade Co.,Ltd products match the highest quality & reliability Standards similar to any International major in this field.
Dongying Zhaoxin Industry and Trade Co.,Ltd with perfect attitude, product and service, is going to make further development together with customers at home and abroad .
Suppliers with verified business licenses
Audited Supplier 
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