OCTG Casing and Tubing Pipe

Short Description:

Type: API 5CT casing, API 5CT tubing, API casing, API tubing, Oil casing, Oil tubing
Spec.: D5 1/2” to 20” Length usually in R3. 1.0”, 1.315”, 1.66”, 1.9”, 2.063”, 2 3/8”, 3 1/2”and 4 1 /2”, Length in R2.
Standard & Grade: API 5CT J55 / K55, N80-1, N80Q, C90, T95, P110, Q125 and 13Cr
Connections: BTC (thread coupling buttress), LTC (long round thread coupling), NUE, EUE, premium connection.
Packing: Bundled/In Bulk, Plastic Caps Plugged, Standard Export Package

Application: Used for Extracing Oil or Gas from Wells


Product Detail

Size Chart

Application

Product Tags

Details of OCTG Casing and Tubing Pipe

What is an OCTG Casing and Tubing Pipe?

OCTG is the acronym for Oil Country Tubular Goods. OCTG is a tube and pipe which is used in the production of oil and gas. This pipe is used both onshore and offshore for the production of oil and gas. Oil Country Tubular Goods is a collection of rolled metal products such as drill pipe, casing and tubing, line pipe, couplings, connections, and accessories that are useful in the production of oil and gas.  These OCTG products are manufactured according to the specifications set by API (American Petroleum Institute). Under the API specifications, OCTG oil and gas pipe is graded under more than ten different grades, depending on their performance and the materials used. OCTG products can be either seamless or welded. They are available in different sizes and lengths. Bestar Steel offers both seamless and welded.

Chemical compositions of casing pipe

Standard

Grade

Chemical compositions(%)

API SPEC 5CT

J55

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

K55

0.340.39

0.200.35

1.251.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.20

/

/

N80

0.340.38

0.200.35

1.451.70

≤0.020

≤0.015

≤0.15

/

/

/

0.110.16

L80

0.150.22

≤1.00

0.251.00

≤0.020

≤0.010

12.014.0

≤0.20

≤0.20

/

/

P110

0.260.395

0.170.37

0.400.70

≤0.020

≤0.010

0.801.10

≤0.20

≤0.20

0.150.25

≤0.08

Mechanical properties of casing pipe

Grade

Type

Total elongation

under load

 (%)

Yield strength

 (min)Mpa

Yield strength

(max)Mpa

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

-

-

Color Codes for API 5CT Casing and Tubing

color casing

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  • Size Chart of OCTG Casing and Tubing Pipe

     

    Size table of casing pipe

    Outside Diameter (Inches) Available Poundage (Pounds Per Foot)
    4-1/2 9.50 PPF to 15.10 PPF
    5 11.50 PPF to 24.10 PPF
    5-1/2 14.00 PPF to 43.10 PPF
    6-5/8 20.00 PPF to 32.00 PPF
    7 17.00 PPF to 57.10 PPF
    7-5/8 24.00 PPF to 55.30 PPF
    7-3/4 46.10 PPF
    8-5/8 24.00 PPF to 49.00 PPF
    9-5/8 32.30 PPF to 75.60 PPF
    10-3/4 32.75 PPF to 85.30 PPF
    11-3/4 42.00 PPF to 71.00 PPF
    13-3/8 48.00 PPF to 72.00 PPF
    16 65.00 PPF to 109.00 PPF
    18-5/8 87.50 PPF
    20 94.00 PPF to 133.00 PPF

     

    Size table of Tubing

    Outside Diameter (Inches) Corresponding Poundage (Pounds Per Foot)
    1.050 1.14 PPF to 1.54 PPF
    1.315 1.70 PPF to 2.24 PPF
    1.660 2.09 PPF to 3.07 PPF
    1.900 2.40 PPF to 5.15 PPF
    2.063 3.24 PPF to 4.50 PPF
    2-3/8 4.00 PPF to 7.45 PPF
    2-7/8 6.40 PPF to 11.50 PPF
    3-1/2 7.70 PPF to 17.00 PPF
    4 9.50 PPF to 22.20 PPF
    4-1/2 12.60 PPF to 26.10 PPF

    Application of OCTG Casing and Tubing Pipe

    - Unconventional
    - Deepwater
    - Shallow Water
    - HP/HT & Deep Wells
    - Horizontal & Extended Reach Wells
    - Casing While Drilling
    - Hermal (SAGD & CSS)
    - TenarisHydril premium connections
    - Internal coatings
    - Premium sucker rods