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API 5CT Tubing

Dimension:OD 48.26-114.3mm WT 3.18-16mm

Grade:JSS, N80-1,N80-Q, LS0-1, L80-9Cr,L80-1,C90, T95, C95, P110 .

Thread types:NUE,EUE etc. 

Standards and Technical Conditions for Supply: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

Tubing are used as pipe to transport crude oil or natural gas from layer of the oil to surface, can hear better pressure during oil or gas production, and have smaller diameters. 


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Description

Tubing is a relatively small-diameter pipe that is run into a well to serve as a conduit for the passage of oil and gas to the field surface facilities for processing. Tubing must be adequately strong to resist loads and deformations associated with production and workovers. Further, tubing must be sized to support the expected rates of production of oil and gas.

API 5CT Tubing

Range 1

Range 2

Range 3

 

6.10~7.32

8.53~9.75

11.58~12.80

Casing&tubing and their colors:


Specification

Label

OD (mm)

WT (mm)

Type of End-finish


NU T&C

EU T&C

IJ

H40

J55

L80

N80

C90

T95

P110

1.9

2.75

2.9

2.76

48.26

3.68

PNUI 

PNUI 

PNUI 

PNUI 

PNUI 

PNUI 

-

1.9

3.65

3.73

-

48.26

5.08

PU 

PU 

PU 

PU 

PU 

PU 

PU 

1.9

4.42

-

-

48.26

6.35

-

-

P 

-

P 

P 

-

2 3/8

4

-

-

60.32

4.24

PU 

PN 

PN 

PN 

PN 

PN 

-

2 3/8

4.6

4.7

-

60.32

4.83

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

2 3/8

5.8

5.95

-

60.32

6.45

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 3/8

6.6

-

-

60.32

7.49

-

-

P 

-

P 

P 

-

2 3/8

7.35

7.45

-

60.32

8.53

-

-

PU 

-

PU 

PU 

-

2 7/8

6.4

6.5

-

73.02

5.51

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

7.8

7.9

-

73.02

7.01

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

8.6

8.7

-

73.02

7.82

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

9.35

9.45

-

73.02

8.64

-

-

PU 

-

PU 

PU 

-

2 7/8

10.5

-

-

73.02

9.96

-

-

P 

-

P 

P 

-

3 1/2

7.7

-

-

88.9

5.49

PN 

PN 

PN 

PN 

PN 

PN 

-

3 1/2

9.2

9.3

-

88.9

6.45

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

3 1/2

10.2

-

-

88.9

7.34

PN 

PN 

PN 

PN 

PN 

PN 

-

3 1/2

12.7

12.95

-

88.9

9.52

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

3 1/2

14.3

-

-

88.9

10.92

-

-

P 

-

P 

P 

-

3 1/2

15.5

-

-

88.9

12.09

-

-

P 

-

P 

P 

-

4

9.5

-

-

101.6

5.74

PN 

PN 

PN 

PN 

PN 

PN 

-

4

10.7

11

-

101.6

6.65

PU 

PU 

PU 

PU 

PU 

PU 

-

4

13.2

-

-

101.6

8.38

-

-

P 

-

P 

P 

-

4

16.1

-

-

101.6

10.54

-

-

P 

-

P 

P 

-

4 1/2

12.6

12.75

-

114.3

6.88

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

-

4 1/2

15.2

-

-

114.3

8.56

-

-

P 

-

P 

P 

-


Standard

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

Mechanical Properties

钢级Grade

类型Type

加载下的总伸长率Total elongation 

under load %

屈服强度Yield Strength M pa

抗拉强度Tensile strength 

min Mpa

硬度Hardness

规定壁厚 Specified wall thickness mm

允许硬度变化Allowable hardness variation

HRC

min

max

HRC

HBW

J55

-

0.5

379

552

517

-

-

-

-

K55

-

0.5

379

552

655

-

-

-

-


N80


1

0.5

552

758

689

-

-

-

-

Q

0.5

552

758

689

-

-

-

-

M65

-

0.5

448

586

586

22

235

-

-


L80


1

0.5

552

655

655

23

241

-

-

9Cr

0.5

552

655

655

23

241

-

-

13Cr

0.5

552

655

655

23

241

-

-

C90

1、2

0.5

621

724

689

25.4

255

≤12.70

3.0

1、2

0.5

621

724

689

25.4

255

12.71-19.04

4.0

1、2

0.5

621

724

689

25.4

255

19.05-25.39

5.0

1、2

0.5

621

724

689

25.4

255

≥25.4

6.0

C95

-

0.5

655

724

724

-

-

-

-

T95

1、2

0.5

655

724

724

25.4

255

≤12.70

3.0

1、2

0.5

655

724

724

25.4

255

12.71-19.04

4.0

1、2

0.5

655

724

724

25.4

255

19.05-25.39

5.0

1、2

0.5

655

724

724

25.4

255

≥25.4

6.0

P110

-

0.6

758

965

862

-

-

-

-

Q125

All

0.65

862

1034

931

b

-

≤12.70

3.0

All

0.65

862

1034

931

b

-

12.71-19.04

4.0

All

0.65

862

1034

931

b

-

≥19.05

5.0

Chemical Composition

Standard

Grade

Composition（%）

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

AIs

API SPEC 5CT

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·

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

P110

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


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