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Sucker Rod Coupling

Introduction

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

Products Details

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

Thread D.(in)

Length of Wrench Square
(mm)

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

Thread D.(in)

Length of Wrench Square
(mm)

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

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)
(+0.13,-0.25)

Length L(mm)
(+1.57,-0.00)

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

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