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Saigao API Spec 5CT Casing pipe

Oil casing is the lifeline to maintain oil well operation. Due to different geological conditions, the downhole stress state is complex, and the comprehensive action of tensile, compressive, bending and torsional stresses acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, the production of the whole well may be reduced or even discarded.

Quantity:
  • API 5CT Casing Pipe
  • SAIGAO
  • 73042900

Saigao API Spec 5CT Casing pipe

 

API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.

Standard: API SPEC 5CT

API 5CT pipe Size (mm):

· Outer Dimensions: 6.0mm – 219.0mm

· Wall Thickness: 1.0mm – 30 mm

· Length: max 12000mm

Application: gas, water and oil transportation in both oil and natural gas .

The main steel grade of API 5CT:

· Saigao API 5CT J55

· Saigao API 5CT K55

· Saigao API 5CT N80

· Saigao API 5CT L80

· Saigao API 5CT P110


API 5CT L80 Oilfield Casing And Tubing

Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .

This International Standard is applicable to the following connections in accordance with ISO 10422 or API Spec 5B:

· short round thread casing (STC);

· long round thread casing (LC);

· buttress thread casing (BC);

· extreme-line casing (XC);

· non-upset tubing (NU);

· external upset tubing (EU);

· integral joint tubing (IJ).

For such connections, this International Standard specifies the technical delivery conditions for couplings and thread protection.

For pipes covered by this International Standard, the sizes, masses, wall thicknesses, grades and applicable end finishes are defined.

This International Standard may also be applied to tubulars with connections not covered by ISO/API standards.

Chemical Composition of API 5CT

Grade

C≤

Si≤

Mn≤

P≤

S≤

Cr≤

Ni≤

Cu≤

Mo≤

V≤

Als≤

J55

0.34-0.39

0.20-0.35

1.25-1.50

0.020

0.015

0.15

0.20

0.20

/

/

0.020

K55

0.34-0.39

0.20-0.35

1.25-1.50

0.020

0.015

0.15

0.20

0.20

/

/

0.020

N80

0.34-0.38

0.20-0.35

1.45-1.70

0.020

0.015

0.15

/

/

/

0.11-0.16

0.020

L80

0.15-0.22

1.00

0.25-1.00

0.020

0.010

12.0-14.0

0.20

0.20

/

/

0.020

J P110

0.26-035

0.17-0.37

0.40-0.70

0.020

0.010

0.80-1.10

0.20

0.20

0.15-0.25

0.08

0.020

Mechanical Properties of API 5CT

Steel Grade

Yield Strength (Mpa)

Tensile Strength (Mpa)

J55

379-552

≥517

K55

≥655

≥517

N80

552-758

≥689

L80

552-655

≥655

P110

758-965

≥862

API Spec 5CT standard replaced by:

· API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells

· This product references:

· Saigao API Spec 5B – Specification for Threading, Gauging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads (US Customary Units) (Includes March 2004 Addendum)

· ISO 10422:1993 – Petroleum and natural gas-industries; threading, gauging, and thread inspection of casing, tubing and line pipe threads; specification

· This product replaces:

· Saigao API 5CT – Specification for Casing and Tubing (U.S. Customary Units)

· Saigao ISO 11960 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 5, Casing, tubing and drill pipe.

 

 


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SHANDONG SAIGAO GROUP CORPORATION
Email: sales1@saigaogroup.com
Add:Zhongrun Century Center, No 12111,Jingshi Road, 
Lixia District, Jinan City, Shandong Province. P.R. China
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