API 5CT Seamless Oil Tubing

Manufacturing method

 ERW, Hot-rolled Seamless

Upset method

 3-step forging mold, full body normalization after upset

 Size (OD)

 1.9", 2 3/8", 2 7/8", 3 1/2", 4", 4 1/2"

 Grade

 J55, N80, L80, P110

 API Connections

 Non upset (NUE), External upset (EUE), Round thread (8RD and 10RD)

 Premium Connections

 HCS

 Length range

 Range 1, 2

 Technical modifications

 Resilient seal (SR 13) with an extra teflon ring seal. 
 BTC connection;

 USS connection;

  Special clearance;
 For extra clearance applications Special bevel; 
 20° bevel
 Internally FBE coated;

 Tungsten-nickel alloy electicplated anticrossion coating;

 Titanium-zirconium alloy powder coating;

 Vacuum nitriding coating;
 Vacuum insulated;
 HDPE liner 

API 5CT OIL TUBING

Labels

Outside

diameter

Nominal linear

masses Labels

Wall

thickness

Type of end finish

1

2

Non-upset

T&C

Ext.

upset

T&C

Integral

-joint

Non-upset

T&C

upset

T&C

Integral

-joint

D

mm

kg/m

kg/m

kg/m

t

mm

H40

J55

L80

N80

1,Q

C90d

T95d

P110

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

1.050

1.14

1.48

1.20

1.54

-

-

26.67

26.67

1.70

2.20

1.79

2.29

-

-

2.87

3.91

UN

U

UN

U

UN

U

UN

U

UN

U

NU

U

-

U

1.315

1.70

2.19

1.80

2.24

1.72

-

33.40

33.40

2.53

3.26

2.68

3.33

2.56

-

3.38

4.55

NUI

U

NUI

U

NUI

U

NUI

U

NUI

U

NUI

U

-

U

1.660

2.09

2.30

3.03

-

2.40

3.07

2.10

2.33

-

42.16

42.16

42.16

-

3.42

4.51

-

3.57

4.57

3.13

3.47

3.18

3.56

4.85

I

NUI

U

I

NUI

U

-

NUI

U

-

NUI

U

-

NUI

U

-

NUI

U

-

-

U

1.900

2.40

2.75

3.65

-

2.90

3.73

2.40

2.76

--

48.26

48.26

48.26

-

4.09

5.43

-

4.32

5.55

3.57

4.11

-

3.18

3.68

5.08

I

NUI

U

I

NUI

U

-

NUI

U

-

NUI

U

-

NUI

U

-

NUI

U

-

-

U

2.063

3.24

-

3.25

52.40

-

-

4.84

3.96

I

I

I

I

I

I

-

2-3/8

4.00

4.60

5.80

7.35

-

4.70

5.95

7.45

-

-

-

-

60.32

60.32

60.32

60.32

5.95

6.85

8.63

10.94

-

6.99

8.85

11.09

-

-

-

-

4.24

4.83

6.45

8.53

U

NU

-

-

N

NU

-

-

N

NU

NU

U

N

NU

NU

-

N

NU

NU

U

N

NU

NU

U

-

NU

NU

-

2-7/8

6.40

7.80

8.60

9.35

6.50

7.90

8.70

9.45

-

-

-

-

73.02

73.02

73.02

73.02

9.52

11.61

12.80

13.91

9.67

11.76

12.95

14.06

-

-

-

-

5.51

7.01

7.82

8.64

NU

-

-

-

NU

-

-

-

NU

NU

NU

U

NU

NU

NU

-

NU

NU

NU

U

NU

NU

NU

U

NU

NU

NU

-

3-1/2

7.70

9.20

10.20

12.70

-

9.30

-

12.95

-

-

-

-

88.90

88.90

88.90

88.90

11.46

13.69

15.18

18.90

-

13.84

-

19.27

-

-

-

-

5.49

6.45

7.34

9.52

U

NU

N

-

N

NU

N

-

N

NU

N

NU

N

NU

N

NU

N

NU

N

NU

N

NU

N

NU

-

NU

-

NU

4

9.50

10.70

-

11.00

-

-

101.60

101.60

14.14

-

-

16.37

-

-

5.74

6.65

N

U

N

U

N

U

N

U

N

U

N

U

N

U

4-1/2

12.60

12.75

-

114.30

18.75

18.97

-

6.88

NU

NU

NU

NU

NU

NU

NU

N = Non-upset threaded and coupled; U = External upset threaded and coupled; I = Integral joint.

a. Nominal linear masses, threads and coupling (col. 2~ 4) are shown for reference only.

b. The densities of martensite chromium steels (L80 types 9Cr and 13Cr) are different from carbon steels. Therefore, the masses values shown above are not accurate to martensite chromium steels. A mass correction factor of 0,989 may be used.

c. Non-upset tubing is available with regular couplings or special bevel couplings. External-upset tubing is available with regular, special-bevel, or special clearance couplings.

d. Grade C90,T95 and Q125 casing shall be furnished with sizes, masses and wall thickness shown above or on the purchase agreement.