.

Sucker Rod Coupling Class T

Sucker Rod CouplingClass T

Our company producedClass T Coupling,subcouplingand spray coupling, they are design according to API Spec 11 Bstandard.Usingthe high quality carbon steel or alloy steel (the equivalent of AISI 1045 and AISI 4135) and plating metal is a kind of surface hardening technology, is the nickel,chromium,boron and silicon powder coated on the substrate metal and fused with the laser processing, after the process,the metal surface makes harder,density higher and more uniform, the friction coefficient is very low and the corrosion resistance is very high.Slim hole (SH) diameter and standard size (FS) of conventional sucker rodand polished rod have plating metal (SM) .Under normal circumstances, there is two wrenchon the coupling and the outside circle, but according to user we can also provide no wrench square.Hardness of couplingT is HRA56-62after heat treatment, with good corrosion resistance and wear resistance, when using sucker rod coupling,is connectingwiththe same sizerod, sub-coupling is used for connectingto differencesize of the sucker rod or connect the polished rod and rod string .Coupling type: Class T (full sizeandslim hole ) ,Class SM (full sizeandslim hole ).

CHEMICAL COMPOSITION

Nominal Size

5/8 in.

3/4 in.

7/8 in.

1 in.

1-1/8 in.

mm

mm

mm

mm

mm

Full Size Sucker Rod Coupling、Full Size Polished Rod Coupling and Full Size Sub-Coupling

ODªOutsside Dimension

Size

46

Tolerance

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

Size

4

4

4

4

Length

Tolerance

0

0

0

0

0

0

0

0

0

0

D2ª

Size

Minimum

D3ª;

Size

35

Tolerance

-0.055

-1.39

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

BC1ₑ Maximun

Size

Slim Hole Sucker Rod Coupling、Slim Hole Polished Rod Coupling and Slim Hole Sub-Coupling

Size

2

ODª

Outsside Dimension

Tolerance

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

Size

4

4

4

4

Length

Tolerance

0

0

0

0

0

0

0

0

D2ª

Size

Minimum

Size

35

D3ª

Tolerance

-0.035

-0.89

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

BC1ₑ Maximun

Size

a As shown in figure C.1

b The nominal size of the coupling is the same size as the sucker rod

c Slim hole coupling is the reduces of the outer diameter

d The size of the outer diameter and length shall be determined by the maximum thread size

e See figure c.2. The type is selected by the manufacturer

f For the full size and slim hole diameter coupling of 1 inch L=4.500in.(114.3mm)

g For the full size sub-coupling of 1-1/8 inch L=5.000in.(127.0mm)

Coupling Chemical Component

AISI

C

Si

Mn

P

S

Cr

Ni

Mo

V

Cu

Al

1541

≤0.04

≤0.04

≤0.3

≤0.35

≤0.06

≤0.35

≤0.035

5140

≤0.025

≤0.025

≤0.3

/

/

≤0.2

/

4135

≤0.025

≤0.025

≤0.3

/

≤0.2

/

4120

≤0.025

≤0.025

≤0.3

/

≤0.2

/

Tensile Strength(MPa)

Yield Strength(MPa)

Elongation(%)

Reduction of Area(%)

≥655

≥405

≥16

≥48

Hardness

GRADE T

GRADE SM

56HRA-62HRA

>595HV200

Hardness

GRADE T

GRADE SM

56HRA-62HRA

>595HV200



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