This news page covers API 5CT casing and tubing in relation to API SPEC 5CT Casing and Tubing. The content highlights standards such as API 5CT and size and dimension requirements, end-use applications. Buyers can use the page to check whether the product, grade, size range, inspection requirements and delivery details match their inquiry.
API 5ct Pipe is a specification of pipes that are used for casing or tubing in industrial gas lines and in tube well. There are different levels of specification such as PSL1, 2 and 3. The Api 5ct Pipe has different carbon and chromium contents in the different product specification levels. Shanghai ShengQiu is one of the leading Steel Casing Pipe suppliers. These are used in transportation of oil and gas, water and other fluids as necessary. The API 5CT Pipe Sizes vary in diameter, wall thickness and length. The API 5CT Casing Pipe comes in different steel grades.
The grades include J55, K55, N80, L80 and P110. These are different mechanical property oriented grades. The pipes come in different connection types as well. The API5CT Pipe Specification includes short round threaded, non – upset tubing, integral joint tubing, external upset tubing, extreme line casing, buttress thread casing and long round thread casing as well. The Api 5ct Pipe Price varies based on the grade, diameter, wall thickness and length of the pipes. Please contact us to know more about these pipe products.
Standard: API SPEC 5CT
Application: gas, water and oil transportation in both oil and natural gas .
The main steel grade of API 5CT:
API 5CT J55, API 5CT K55, API 5CT N80, API 5CT L80, API 5CT P110.
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
This International Standard is applicable to the following connections in accordance with ISO 10422 or API Spec 5B:
·short round thread casing (STC);
·long round thread casing (LC);
·buttress thread casing (BC);
·extreme-line casing (XC);
·non-upset tubing (NU);
·external upset tubing (EU);
·integral joint tubing (IJ).
Chemical Composition Of Steel Casing Pipe
Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≤ | Ni≤ | Cu≤ | Mo≤ | V≤ | Als≤ |
API 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 |
API 5CT K55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.15 | 0.20 | 0.20 | / | / | 0.020 |
API 5CT 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 |
API 5CT 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 |
API 5CT J P110 | 0.26-035 | 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 |
Mechanical Properties Of API 5CT Pipe
Steel Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) |
API 5CT J55 | 379-552 | ≥517 |
API 5CT K55 | ≥655 | ≥517 |
API 5CT N80 | 552-758 | ≥689 |
API 5CT L80 | 552-655 | ≥655 |
API 5CT P110 | 758-965 | ≥862 |
API 5CT P110 Casing Tubing Tensile & Hardness Requirement
Group | Grade | Type | Total elongation under load % | Yield strength MPa | Tensile strength min. MPa | Hardness a max. | Specified wall thickness mm | Allowable hardness variation b HRC | ||
min. | max . | HRC | HBW | |||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
1 | 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 | - | - | - | - | |
R95 | - | 0.5 | 655 | 758 | 724 | - | - | - | - | |
2 | M65 | - | 0.5 | 448 | 586 | 586 | 22 | 235 | - | - |
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 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
C110 | - | 0.7 | 758 | 828 | 793 | 30 | 286 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39. ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
3 | P110 | - | 0.6 | 758 | 965 | 862 | - | - | - | - |
4 | Q125 | 1 | 0.65 | 862 | 1034 | 931 | b | - | ≤ 12.70 12.71 to 19.04 ≥ 19.05 | 3.0 4.0 5.0 |
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. | ||||||||||
API 5CT GR.L80 Pipe Dimension Tolerance
Types of steel tubes | Outer Diameter | Wall Thickness | |
Cold-rolled tubes | Tube sizes(mm) | Tolerances(mm) | Tolerances(mm) |
＜114.3 | ±0.79 | －12.5％ | |
≥114.3 | －0.5％，＋1％ | ||
API 5CT Grade P110 Casing Tubing Steel Color Code
Name | J55 | K55 | N80-1 | N80-Q | L80-1 | P110 |
Casing | a bright green band | two bright green bands | a bright red band | a bright red band + a green band | a red band + a brown band | a bright white band |
Coupling | entire green coupling + a white band | entire green coupling | entire red coupling | entire red coupling + a green band | entire red coupling + a brown band | entire white coupling |
