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Class T and Class SM coupling for sucker rods are manufactured as per API 11B Class T coupling is using AISI 5140 to manufacture. AS for Class SM coupling, the spray metal is a specified hardening process which is used 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
Full Size Coupling
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Thread D.(in) |
Length of Wrench Square |
Hardness(HRA) |
|
5/8" |
38.10 |
101.6 |
15/16" |
31.8 |
56-62 |
|
3/4" |
41.28 |
1-1/16" |
|||
|
7/8" |
46.00 |
1-3/16" |
|||
|
1" |
55.60 |
1-3/8" |
38.1 |
||
|
1-1/8" |
60.33 |
114.3 |
1-9/16" |
Slim-hole Coupling
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Thread D.(in) |
Length of Wrench Square |
Hardness(HRA) |
|
5/8" |
31.75 |
101.6 |
15/16" |
31.8 |
56-62 |
|
3/4" |
38.10 |
1-1/16" |
|||
|
7/8" |
41.30 |
1-3/16" |
|||
|
1" |
50.80 |
1-3/8" |
38.1 |
Full Size Sub-coupling
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Small End Thread D. |
Big End Thread D. |
Hardness(HRA) |
|
5/8"-3/4" |
41.28 |
101.6 |
15/16" |
1-1/16" |
56-62 |
|
3/4"-7/8" |
46.00 |
1-1/16" |
1-3/16" |
||
|
7/8"-1" |
55.60 |
114.3 |
1-3/16" |
1-3/8" |
|
|
1"-1-1/8" |
60.33 |
127.0 |
1-3/8" |
1-9/16" |
Slim-hole Sub-coupling
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Small End Thread D. |
Big End Thread D. |
Hardness(HRA) |
|
5/8"-3/4" |
38.10 |
101.6 |
15/16" |
1-1/16" |
56-62 |
|
3/4"-7/8" |
41.30 |
1-1/16" |
1-3/16" |
||
|
7/8"-1" |
50.80 |
114.3 |
1-3/16" |
1-3/8" |
Full Size Polished Connection
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Thread D.(in) |
Vanish Cone |
Hardness(HRA) |
|
5/8" |
38.10 |
101.6 |
15/16" |
9O |
56-62 |
|
3/4" |
41.28 |
1-1/16" |
|||
|
7/8" |
46.00 |
1-3/16" |
|||
|
1" |
55.60 |
1-3/8" |
|||
|
1-1/8" |
60.33 |
114.3 |
1-9/16" |
Slim Hole Polished Connection
|
Size(in) |
Coupling O.D W(mm) |
Length L(mm) |
Thread D.(in) |
Vanish Cone |
Hardness(HRA) |
|
5/8" |
31.75 |
101.6 |
15/16" |
9O |
56-62 |
|
3/4" |
38.10 |
1-1/16" |
|||
|
7/8" |
41.30 |
1-3/16" |
|||
|
1" |
50.80 |
1-3/8" |
Coupling Mechanical Properties
|
Tensile Strength Rm(Mpa) |
Yield Strength Rel(Mpa) |
Elongation Percentage A(%) |
Reduction Percentage of Area Z(%) |
|
≥655 |
≥405 |
≥16 |
≥48 |
Request for Quotation
You can get the price list and a SBM representative will contact you within one business day.