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API 5CT Tubing Pipe
Dimension:OD 48.26-114.3mm WT 3.18-16mm
Grade:JSS, N80-1,N80-Q, L80-1, 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.
API 5CT Tubing Pipe
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Description


API 5CT Tubing Pipe is a special pipe for oil and gas production run inside the oil well casing, following the API 5CT international standard, and is the "channel" for transporting oil and gas from the formation to the ground. The product has high strength, high sealing performance, wear resistance and corrosion resistance, and can withstand the erosion of high pressure, high temperature and complex media (crude oil, natural gas, formation water) downhole. It is divided into plain-end tubing, upset tubing and other types, adapting to different oil production processes (natural flow production, mechanical oil production, etc.). The steel grades cover J55, N80, P110, etc., and can be customized with specifications according to well depth, output and downhole working conditions to ensure efficient exploitation and stable transportation of oil and gas. It is the core consumable for oil and gas production operations.


Specification


OD (mm)

Type of End-finish










EU T&C

H40

L80

C90

P110







2.75

2.76

3.68

PNUI

PNUI

PNUI

1.9

3.73

48.26

PU

PU

PU

PU

4.42

-

6.35

-

-

P

2 3/8

-

60.32

PU

PN

PN

-

4.6

-

4.83

PNU

PNU

PNU

2 3/8

5.95

60.32

-

PNU

PNU

PNU

6.6

-

7.49

-

-

P

2 3/8

7.45

60.32

-

PU

PU

-

6.4

-

5.51

PNU

PNU

PNU

2 7/8

7.9

73.02

-

PNU

PNU

PNU

8.6

-

7.82

-

PNU

PNU

2 7/8

9.45

73.02

-

PU

PU

-

10.5

-

9.96

-

-

P

3 1/2

-

88.9

PN

PN

PN

-

9.2

-

6.45

PNU

PNU

PNU

3 1/2

-

88.9

PN

PN

PN

-

12.7

-

9.52

-

PNU

PNU

3 1/2

-

88.9

-

P

P

-

15.5

-

12.09

-

-

P

4

-

101.6

PN

PN

PN

-

10.7

-

6.65

PU

PU

PU

4

-

101.6

-

P

P

-

16.1

-

10.54

-

-

P

4 1/2

12.75

114.3

PNU

PNU

PNU

-

15.2

-

8.56

-

-

P

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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

Specified wall thickness mm

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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