Norway API 5CT Steel Pipe
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Product Description
API 5CT Steel Pipe Description
API 5CT is a standard technical specification of steel pipes for casing and tubing in oil or gas industries. It can be used in oil or gas drilling and conveying. Commonly used oilfield API-5CT casing steel grades are J55, K55, N80-1, N80Q, P110. Casings are mostly used in oil well drilling. According to the API-5CT standard, pipes can be divided into STC (short thread), LTC (long thread) and BTC (support thread) and their joints.
Product Parameters
|
Product Name |
API 5CT Steel Pipe |
|
|
Standard |
EN/DIN/JIS/ASTM/BS/ASME/AISI etc. |
|
|
Outer Diameter |
Seamless: 1/4"-36" |
Welding: 21.3mm-3620mm |
|
Round Tube: 1/2"-10" |
Square Tube/Rectangular Tube: 15x15mm-400x600mm |
|
|
Wall Thickness |
Seamless: 1.25mm-50mm |
Welding: 1.65mm-65mm |
|
Length |
3-12 meters, Support customization |
|
|
Surface Process |
Bright, Polished, Black |
|
|
Other Services |
Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. |
|
Chemical Composition
|
Grade |
C ≤ |
Si ≤ |
Mn ≤ |
P ≤ |
S ≤ |
Cr ≤ |
Ni ≤ |
With |
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 |
0.08 |
0.020 |
Mechanical Properties
|
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 |
Scope of Application
API 5CT oil casing is mainly used to transport oil, natural gas, coal gas, water and other liquids, gases.


















