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API 5CT

Date:2018-06-08    View:481      Tag:API 5CT

API 5CT Casing & Tubing 

Mechanical properties: 

Standard

Grade

Tensile Strength(MPa)

Yield Strength(MPa)

API SPEC 5CT

J55

≥517

379~552

K55

≥517

≥655

N80

≥689

552~758

L80(13Cr)

≥655

552~655

P110

≥862

758~965

 

Chemical Composition:

Standard

grade

Chemical Composition(%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Als

API SPEC 5CT

J55K55 (37Mn5)

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 (36 Mn2V)

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(13Cr)

0.15~0.22

≤1.00

0.25~1.00

≤0.020

≤0.010

12.0~14.0

≤0.20

≤0.20

/

/

≤0.020

P110 (30CrMo)

0.26~0.35

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

 

Dimensional Deviation:

Dimensional Deviation

Items

Allowable Deviation

Out Diameter

Pipe Body

D≤101.60mm±0.79mm

D≥114.30mm +1.0%

-0.5%

 

 

Wall Thickness

-12.5%

Weight

Each Piece

+6.5%

+3.5%

 

Length Range

Length

Item

Scope  1 

Scope 2

Scope 3

Tubing

6.10-7.32m

8.53-9.75m

-

Casing

4.88-7.62m

7.62-10.36m

10.36-14.63m


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