API 5CT Q125

API 5CT Q125

API 5CT Q125 is an API 5CT oil casing pipe grade that is commonly used in deep wells with a variety of end connections, such as non-upset ends or an external upset end. Each heat and/or batch must undergo impact testing. On this product, NDT inspections like EMI and UT are frequently necessary.

API 5CT Q125 Casing and tubing are used to ensure structural integrity to the wellbore and must withstand external collapse pressure from rock formations as well as internal yield pressure from fluid and gas. It must also be able to support its own dead weight as well as endure the torque and transaxial pressure applied to it while going downhole. Following the application of a protective coating to the tubing’s outer surface, it is marked in accordance with the API 5CT standard and strapped with a metal belt.

PRODUCT FEATURES

Product Description of API 5CT Q125

Product name

API-5CT Q125

Size

O. D

26.67-508mm

W. T

2.87-16.13mm

Length

R1(5.49-6.71m),R2(8.23-9.14m),R3(11.58-13.72m)

Type of end finish

1.Plain end
2.Short round thread
3.Long round thread
4.Buttress thread

Surface

1.Black Painted
2.With oil
3.Bared or as per customers’ requirement

Standard

API 5CT

Application

Tube for conveying gas, water, and oil in both and natural gas industries etc.

Chemical Composition of API 5CT Q125

Group

Grade

Type

C

Mn

Mo

Cr

Ni max.

Cu max.

P max.

S max.

Si max.

min.

max.

min.

max.

min.

max.

min.

max.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

4

Q125

1

0.35

1.0

0.75

1.2

0.99

0.02

0.01

2

0.35

 

1.0

 

NL

 

NL

0.99

0.20

0.20

 

3

0.50

 

1.90

 

NL

 

NL

0.99

0.30

0.20

 

4

0.50

 

1.90

 

NL

 

NL

0.99

0.30

0.20

 

Mechanical Analysis of API 5CT Q125

API 5CT Casing Pipe Standard

API 5CT Casing Pipe Type

API 5CT Casing Pipe Tensile Strength
MPa

API 5CT Casing Pipe Yield Strength
MPa

Total elongation under load %

API SPEC 5CT Q125

1-4

≥931

862 ~ 1034

0.

Test of API 5CT Q125 Steel Pipe

  • Chemical Component Analysis.
  • Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation).
  • Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc.
  • Exterior Size Inspection.
  • Nondestructive Test (Ultrasonic flaw detector, Eddy current flaw detector), Hydrostatic Test.

API 5CT Q125 Casing and Tubing Specifications

Code a

Outer Diameter

Nominal Weight
(with thread and
coupling) b, c

Wall Thickness

End Processing Type

mm

kg/m

mm

Q125d

In

Lb/ft

1

2

3

4

5

13

4-1-2

9.5

114.3

14.14

5.21

4-1-2

10.5

114.3

15.63

5.69

4-1-2

11.6

114.3

17.26

6.35

4-1-2

13.5

114.3

20.09

7.37

4-1-2

15.1

114.3

22.47

8.56

LB

5

11.5

127

17.11

5.59

5

13

127

19.35

6.43

5

15

127

22.32

7.52

5

18

127

26.79

9.19

LB

5

21.4

127

31.85

11.1

5

23.2

127

34.53

12.14

LB

5

24.1

127

35.86

12.7

5-1-2

14

139.7

20.83

6.2

5-1-2

15.5

139.7

23.07

6.98

5-1-2

17

139.7

25.3

7.72

5-1-2

20

139.7

29.76

9.17

5-1-2

23

139.7

34.23

10.54

LB

6-5-8

20

168.28

29.76

7.32

6-5-8

24

168.28

35.72

8.94

6-5-8

28

168.28

41.67

10.59

6-5-8

32

168.28

47.62

12.06

LB

7

17

177.8

25.3

5.87

7

20

177.8

29.76

6.91

7

23

177.8

34.23

8.05

7

26

177.8

38.69

9.19

7

29

177.8

43.16

10.36

7

32

177.8

47.62

11.51

7

35

177.8

52.09

12.65

7-5-8

24

193.68

35.72

7.62

7-5-8

26.4

193.68

39.29

8.33

7-5-8

29.7

193.68

44.2

9.52

7-5-8

33.7

193.68

50.15

10.92

7-5-8

39

193.68

58.04

12.7

LB

7-5-8

42.8

193.68

63.69

14.27

7-5-8

45.3

193.68

67.41

15.11

LB

7-5-8

47.1

193.68

70.09

15.88

LB

8-5-8

24

219.08

35.72

6.71

8-5-8

28

219.08

41.67

7.72

8-5-8

32

219.08

47.62

8.94

8-5-8

36

219.08

53.57

10.16

8-5-8

40

219.08

59.53

11.43

8-5-8

44

219.08

65.48

12.7

 

8-5-8

49

219.08

72.92

14.15

LB

Code a

Outer Diameter

Nominal Weight
(with thread
and coupling) b, c

Wall Thickness

End Processing Type

mm

kg/m

mm

Q125d

In

Lb/ft

1

2

3

4

5

13

9-5-8

32.3

244.48

48.07

7.92

9-5-8

36

244.48

53.57

8.94

9-5-8

40

244.48

59.53

10.03

9-5-8

43.5

244.48

64.73

11.05

9-5-8

47

244.48

69.94

11.99

LB

9-5-8

53.5

244.48

79.62

13.84

LB

9-5-8

58.4

244.48

86.91

15.11

10-3-4

32.75

273.05

48.74

7.09

10-3-4

40.5

273.05

60.27

8.89

10-3-4

45.5

273.05

67.71

10.16

10-3-4

51

273.05

75.9

11.43

10-3-4

55.5

273.05

82.59

12.57

10-3-4

60.7

273.05

90.33

13.84

SB

10-3-4

65.7

273.05

97.77

15.11

SB

11-3-4

42

298.45

62.5

8.46

11-3-4

47

298.45

69.94

9.53

11-3-4

54

298.45

80.36

11.05

11-3-4

60

298.45

89.29

12.42

SB

13-3-8

48

339.72

71.43

8.38

13-3-8

54.5

339.72

81.1

9.65

13-3-8

61

339.72

90.78

10.92

13-3-8

68

339.72

101.19

12.19

13-3-8

72

339.72

107.15

13.06

SB

16

65

406.4

96.73

9.53

16

75

406.4

111.61

11.13

16

84

406.4

125.01

12.57

18-5-8

87.5

473.08

130.21

11.05

20

94

508

139.89

11.13

20

106.5

508

158.49

12.7

20

133

508

197.93

16.13

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