API Standard Coupling

API Standard Coupling

API standard couplingshall be machined from the coupling blank,and made from the coupling material ,coupling stocks or hot forging.
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Product Details

Product Description:

API standard couplingshall be machined from the coupling blank,and made from the coupling material ,coupling stocks or hot forging.


Standard size:

Standard: API 5CT, API 5B
Steel Grade: J55, K55, L80, N80, C90, C95, T95, P110.
Tubing size: 1.315"-4 1/2"
End finish: Plain end; Non-upset threaded and coupled; External upset threaded and coupled.
Thread: Short round thread; Long round tread; Buttress thread
Application: Tubing is used to extracting petroleum and natural gas from a well.

Item

Outer Diameter

Wall Thickness

 

Length

Rang 1

Rang 2

Rang 3

D<114.3

D>=114.3

 

Tubing

6.10~7.32

8.53~9.57

 

Tolerance

±0.79

-0.5%,+1%

+/-12.50%

    

Casing

4.88~7.62

7.62~10.36

10.36~14.63

 

Grade

Chemical Compositions (%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Als

J55,K55

0.34~0.39

0.20~0.35

1.25~1.5

≤0.02

≤0.015

≤0.15

≤0.20

≤0.20

 

 

≤0.020

N80

0.34~0.38

0.20~0.35

1.45~1.7

≤0.02

≤0.015

≤0.15

 

 

 

0.11~0.16

≤0.020

L80

0.15~0.22

≤1.00

0.25~1.0

≤0.02

≤0.010

12.0~14.0

≤0.20

≤0.20

 

 

≤0.020

P110

0.26~0.35

0.17~0.37

0.40~0.7

≤0.02

≤0.010

0.80~1.10

≤0.20

≤0.20

0.15~0.25

≤0.08

≤0.020

 

Mechanical properties

Standard

Grade

Tensile strength(Mpa)

Yield strength(Mpa)

Elongation (%)

Hardness

API SPEC 5CT

J55

≥517

379~552

Check the table

 

K55

≥517

≥655

 

N80

≥689

552~758

 

L80

≥655

552~655

≤241HB

P110

≥862

758~965

 

 

Package&Delivery

Package

Standard Steel Frame

Delivery

Within 15 working days

Shippment

EXW,CFR,CIF By air, By sea


Our Services/Warranty

As a professional manufacturer, we provide follow services:

1.Lower price

2.ONE year warranty and life time maintenance

3.In time delivery.

4.High Quality assurance.. 

 

 

 


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