Products

We are committed to providing one-stop service for steel pipe products to customers around the world.

Square steel tube,Stainless steel pipe,HFW steel pipe
BackYou are in :  Home  >  Products  >  Oilfiled Tubulars(OCTG)  >  Casing
Product Gategory
Factory
  • Square steel tube,Stainless steel pipe,HFW steel pipe
  • Square steel tube,Stainless steel pipe,HFW steel pipe
  • Square steel tube,Stainless steel pipe,HFW steel pipe
  • Square steel tube,Stainless steel pipe,HFW steel pipe
  • Square steel tube,Stainless steel pipe,HFW steel pipe
  • Square steel tube,Stainless steel pipe,HFW steel pipe

Casing

Pipe type:Casing

Size :

OD: 4 1/2"- 20" (114.3mm-508mm) WT: 0. 205"- 0.635"

Length: R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr - 14.63mtr)

Connection: LTC, STC, BTC, VAM. 

Standard & Grade:API 5CT, SY/T 6194, BS EN ISO 11960, NF M87-207, JIS G3439, IS:4270, H-40, J55, K-55, N-80, N80Q, C-75, L-80, C-90, T-95, P110, Q-125

Surface:Black Painting, Corrosion proofing water based paint;

Packing:Bundled or bulk , seaworthy packing or for the client's requirement

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

  • Description
  • Specification
  • Standard
  • Process
  • Packing

Casing is used for lining the complete borehole which has been dug into the ground to procure olil Similar to the drill pipe, the oil well casing pipe is also subjected to axial tension, therefore they are required to be made from high-quality strong steel material. OCTG casing is large diameter pipe which are held in place in the borehole using cement.

CASING AND TUBING

API 5CT

Casing:OD 4 1/2"- 20" (114.3mm-508mm)              Tubing:OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)

WT: 0. 205"- 0.635" 

 H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95,P110,Q-125


Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells

SY/T 6194 /    

BS EN ISO 11960/

NF M87-207

Casing:OD 4 1/2"- 20" (114.3mm-508mm)              Tubing:OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)

WT: 0. 205"- 0.635"

H-40, J55, K-55, N-80,N80Q,C-75, L-80, C-90, T-95,P110,Q-125


API 5CT Well Casing Length:

API 5CT Casing

Range 1

Range 2

Range 3

4.88~7.62

7.62~10.36

10.36~14.63


Dimension

Labels

OD(mm)

WT(mm)

J55/K55

N80

L80

C90/T95

P110

Q125

4 1/2

9.5

114.3

5.21

PS

-

-

-

-

-

10.5

114.3

5.69

PSB

-

-

-

-

-

11.6

114.3

6.36

PSLB

PLB

PLB

PLB

PLB

-

13.5

114.3

7.37

-

PLB

PLB

PLB

PLB

-

15.1

114.3

8.56

-

-

-

-

PLB

PLB

5

11.5

127

5.59

PS

-

-

-

-

-

13

6.43

PSLB

-

-

-

-

-

15

7.52

PSLBE

PLBE

PLBE

PLBE

PLBE

-

18

9.19

-

PLBE

PLBE

PLBE

PLBE

PLBE

21.4

11.10

-

PLB

PLB

PLB

PLB

PLB

23.2

12.14

-

PLB

PLB

PLB

PLB

PLB

24.1

12.7

-

PLB

PLB

PLB

PLB

PLB

5 1/2

14

139.7

6.20

PS

-

-

-

-

-

15.5

6.98

PSLBE

-

-

-

-

-

17

7.72

PSLBE

PLBE

PLBE

PLBE

PLBE

-

20

9.17

-

PLBE

PLBE

PLBE

PLBE

-

23

10.54

-

PLBE

PLBE

PLBE

PLBE

PLBE

26.8

12.7

-

-

-

P

-

-

29.7

14.27

-

-

-

P

-

-

32.6

15.88

-

-

-

P

-

-

35.3

17.45

-

-

-

P

-

-

38

19.05

-

-

-

P

-

-

40.5

20.62

-

-

-

P

-

-

43.1

64.14

-

-

-

P

-

-

6 5/8

20

168.28

7.32

PSLB






24

8.94

PSLBE

PLBE

PLBE

PLBE

PLBE

-

28

10.59

-

PLBE

PLBE

PLBE

PLBE

-

32

12.06

-

PLBE

PLBE

PLBE

PLBE

PLBE

7

20

177.8

6.91

PS






23

8.05

PSLBE

PLBE

PLBE

PLBE

-

-

26

9.19

PSLBE

PLBE

PLBE

PLBE

PLBE

-

29

10.6


PLBE

PLBE

PLBE

PLBE


32

11.51


PLBE

PLBE

PLBE

PLBE


35

12.65


PLBE

PLBE

PLBE

PLBE

PLBE

38

13.72


PLBE

PLBE

PLBE

PLBE

PLBE

7 5/8

26.4

193.67

8.33

PSLBE

PLBE

PLBE

PLBE

-

-

29.7

9.52

-

PLBE

PLBE

PLBE

PLBE

-

33.7

10.92

-

PLBE

PLBE

PLBE

PLBE

-

39

12.7

-

PLBE

PLBE

PLBE

PLBE

PLBE

42.8

14.27

-

PLB

PLB

PLB

PLB

PLB

45.3

15.11

-

PLB

PLB

PLB

PLB

PLB

47.1

15.88

-

PLB

PLB

PLB

PLB

PLB

8 5/8

24

219.08

6.71

PS

-

-

-

-

-

28

7.72

-

-

-

-

-

-

32

8.94

PSLBE

-

-

-

-

-

36

10.16

PSLBE

PLBE

PLBE

PLBE

-

-

40

11.43

-

PLBE

PLBE

PLBE

PLBE

-

44

12.70

-

PLBE

PLBE

PLBE

PLBE

-

49

14.15

-

PLBE

PLBE

PLBE

PLBE

PLBE

9 5/8

36

244.48

8.94

PSLB

-

-

-

-

-

40

10.03

PSLBE

PLBE

PLBE

PLBE

-

-

43.5

11.05

-

PLBE

PLBE

PLBE

PLBE


47

11.99

-

PLBE

PLBE

PLBE

PLBE

PLBE

53.5

13.84

-

PLBE

PLBE

PLBE

PLBE

PLBE

58.4

15.11

-

PLB

PLB

PLB

PLB

PLB

10 3/4

40.5

273.05

8.89

PSB

-

-

-

-

-

45.5

10.16

PSBE

-

-

-

-

-

51

11.43

PSBE

PSBE

PSBE

PSBE

PSBE

-

55

12.57

-

PSBE

PSBE

PSBE

PSBE

-

60.7

13.84

-

-

-

PSBE

PSBE

PSBE

65.7

15.11

-

-

-

PSB

PSB

PSB

113/4

47

298.45

9.53

PSB

-

-

-

-

-

54

11.05

PSB

-

-

-

-

-

60

12.42

PSB

PSB

PSB

PSB

PSB

PSB

13 3/8

48

339.72

8.38

-

-

-

-

-

-

54.5

9.65

PSB

-

-

-

-

-

61

10.92

PSB

-

-

-

-


68

12.19

PSB

PSB

PSB

PSB

PSB

-

72

13.06

-

PSB

PSB

PSB

PSB

PSB

16

75

406

11.13

PSB

-

-

-

-

-

84

12.57

PSB

-

-

-

-

-

109

16.66

P

P

P

-

P

P

20

94

508

11.13

PSLB

-

-

-

-

-

30

96

762

16.13

PSLB

-

-

-

-

-

P-Plain end; S-Short round thread; L-Long round thread; B-Buttress thread; E-Extreme line;


Dimension Tolerances

Tolerance

Outside Diameter

Pipe Body

D≤101.60mm,±0.79mm

D≥114.30mm,+1.0%, -0.5%D

Coupling

±1%D

t  Wall Thickness

0, -12.5%t

Weight

Single Lengths

+6.5%,-3.5%

Carload Lots or Order Quantity

≥18144 kg(40000ib),0,-1.75%

<18144 kg(40000ib),0,-3.5%

Tensile and Hardness Requirements

steel grade

type

total elongation under load (%)

yield strength (Mpa)

tensile strength (Mpa)

min

hardness

max

min

max

HRC

HBW


H40

-

0.5

276

552

414

-

-

J55

-

0.5

379

552

517

-

-

K55

-

0.5

379

552

655

-

-

N80

1

0.5

552

758

689

-

-

N80

Q

0.5

552

758

689

-

-

M65

-

0.5

448

586

586

22

235

L80

1

0.5

552

655

655

23

241

L80

9 Cr

0.5

552

655

655

23

241

L80

13 Cr

0.5

552

655

655

23

241

C90

1

0.5

621

724

689

25.4

255

P110

-

0.6

758

965

862

-

-

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

Chemical Composition, Mass Fraction(%)


steel grade


type

C

Mn

Mo

Cr

Ni

Max

Cu

Max

P

Max

S

Max

Si

Max

Min

Max

Min

Max

Min

Max


Max





H40

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

J55

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

K55

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

N80

1

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

N80

Q

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

M65

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

L80

1

-

0.43

-

1.90

-

-

-

-

0.25

0.35

0.030

0.030

0.45

L80

9 Cr

-

0.15

0.30

0.60

0.90

1.10

8.00

10.0

0.50

0.25

0.020

0.010

1.00

L80

13 Cr

0.15

0.22

0.25

1.00

-

-

12.0

14.0

0.50

0.25

0.020

0.010

1.00

C90

1

-

0.35

-

1.20

0.25

0.85

-

1.50

0.99

-

0.020

0.010

-

P110

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

Q125

1

-

0.35

-

1.35

-

0.85

-

1.50

0.99

-

0.020

0.010

-

Note: If the wall thickness is less than 17.78mm, the molybdenum content of the C90-1 steel grade has no lower limit.


Mechanical properties of casing pipe

Grade

Type

Total elongation under load (%)

Yield strength (min)

Yield strength (max)

Tensile strength min Mpa

Hardness Max (HRC)

Hardness Max(HBW)

J55

-

0.5

379

552

517

-

-

K55

-

0.5

379

552

655

-

-

N80

1

0.5

552

758

689

-

-

N80

Q

0.5

552

758

689

-

-

L80

1

0.5

552

655

655

23

241

L80

9Cr

0.5

552

655

655

23

241

L80

13Cr

0.5

552

655

655

23

241

C90

-

0.5

621

724

689

25.4

255

C95

-

0.5

655

758

724

-

-

T95

-

0.5

655

758

724

25.4

255

P110

-

0.6

758

965

862

-

-

Q125

All

0.65

862

1034

931

-

-


Round Pipe →  pipe inspection  → NDT inspection MPI → End Threading → Thread Inspection → Coupling Threading lnspection  → NDT inspection MPI ( coupling) → Phosphating (for coupling) → Coupling power Make up → Hydrostatic test → Drift test → Doping and Protectors Application  → Coating  → Measurement of  Length and Weight → Colour Identification → Marking → Packing → Warehousing

Bundled package




Wooden box package


Inquiry Online

Recommended Products