| Customization: | Available |
|---|---|
| After-sales Service: | Online Service |
| Warranty: | 12 Months |
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Class T and Class SM coupling for sucker rods are manufactured as per API Specification 11B. For the thread cutting, we are using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
Class T coupling is using AISI 5140 to manufacture.The coupling is coated using phosphate chemical treatment or black oxide on customer's request.For Class SM coupling, the spray metal is a specification hardening process and is applied on the base metal.
The couplings are available in full size, slim hole and over size.Also, combination couplings are available for different diameters (sub-coupling) for both Class T and Class SM couplings.
We recommend changing sucker rod couplings after three make-ups, provided the connection threads have been inspected and deemed acceptable for reuse.
1. Designed and manufactured according to API spec 11B.
2. The couplings are manufactured in grades SM and DES.
3. Increased wear and corrosion resistance.
4. Surface treatment includes black coating, phosphating or as per the customers requirement.
Dimension table :
|
OD
|
Coupling OD
|
Length
|
Wrench length
|
Wrench width
|
|
|
mm
|
in
|
(inch- mm)
|
(inch- mm)
|
mm
|
mm
|
|
16
|
5/8
|
38.1(1.500)
|
101.6(4.000)
|
31.8
|
34.9
|
|
19
|
3/4
|
41.3(1.625)
|
101.6(4.000)
|
31.8
|
38.1
|
|
22
|
7/8
|
46.0(1.812)
|
101.6(4.000)
|
31.8
|
41.3
|
|
25
|
1
|
55.6(2.187)
|
101.6(4.000)
|
31.8
|
47.6
|
|
29
|
1 1/8
|
60.3(2.375)
|
114.3(4.500)
|
41.3
|
53.9
|
Chemical Composition of Common Sucker Rod Material :
|
Chemical Properties, %: Class T Coupling
|
|
|
Steel
|
AISI 5140
|
|
C
|
0.37~0.44
|
|
Si
|
0.17~0.37
|
|
Mn
|
0.50~0.80
|
|
P
|
≤0.040
|
|
S
|
≤0.040
|
|
Spray Metal Coating Chemical Properties, %: Class SM Coupling
|
|
|
Carbon
|
0.50~1.00
|
|
Silicon
|
3.50~5.50
|
|
Phosphorus
|
0.00~0.02
|
|
Sulfur
|
0.00~0.02
|
|
Chromium
|
12.00~18.00
|
|
Boron
|
2.50~4.50
|
|
Iron
|
3.00~5.50
|
|
Cobalt
|
0.00~0.10
|
|
Titanium
|
0.00~0.05
|
|
Aluminum
|
0.00~0.05
|
|
Zirconium
|
0.00~0.05
|
|
Nickel
|
Balance
|
Q1. What is the advantage about your company?
A1. Our company has professional team and professional production line.
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