ERW Steel Pipe API 5CT
In API 5CT, raw materials are divided into four groups. Group 1 is H, J, K, N, group 2 is C, L, M, T, group 3 is P, and group 4 is Q. Among them, there are distinctions such as J55, K55 and N80-1N80-O. Basically, they are divided according to the numerical range of material properties (steel grade, rolling, heat treatment, and finally the performance). As for the classification of steel grades in each group, they are also divided according to their properties.
API 5CT ERW Pipe Specification
|
Type |
API ERW Steel Pipe For Casing and Tubing |
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|
Executive Standard |
API 5L |
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|
Materials |
PSL1-L245B/L290X42/L320X46/L360X52/L390X56/L415X60/L450X65/L485X70 PSL2-L245/L290/L320/L360/L390/L415/L450/L485 X42/X46/X52/X56/X60/X65/X70/X80 |
|
|
Size |
Outer Diameter |
Seamless:17-914mm 3/8"-36" |
|
Wall Thickness |
2-60mm SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80 SCH100 SCH120 SCH140 SCH160 XXS |
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|
Length |
Single random length/Double random length 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual request |
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|
Ends |
Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded andcoupling,etc. |
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|
Surface Treatment |
Bare,Painting black,varnished,galvanized,anti-corrosion 3PE PP/EP/FBE coating |
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Technical Methods |
Hot-rolled/Cold-drawn/Hot-expanded |
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|
Testing Methods |
Pressure test,Flaw detection,Eddy current testing, Hydrostatic testing or Ultrasonic examination and also with chemical and physical property inspection |
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Packaging |
Small pipes in bundles with strong steel strips,large pieces in loose Also according to customer's requests |
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Application |
Conveying oil gas and water |
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Certificates |
API ISO |
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MOQ |
10 tons |
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Supply Capacity |
5000 T/M |
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Delivery Time |
Usually within 25-35 days after receipt of advance payment |
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Chemical Composition of API 5CT casing pipe
| Standard | Grade | Chemical compositions(％) | |||||||||
| API SPEC 5CT | J55 | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V |
| K55 | 0.34～0.39 | 0.20～0.35 | 1.25～1.50 | ≤0.020 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 | / | / | |
| N80 | 0.34～0.38 | 0.20～0.35 | 1.45～1.70 | ≤0.020 | ≤0.015 | ≤0.15 | / | / | / | 0.11～0.16 | |
| L80 | 0.15～0.22 | ≤1.00 | 0.25～1.00 | ≤0.020 | ≤0.010 | 12.0～14.0 | ≤0.20 | ≤0.20 | / | / | |
| P110 | 0.26～0.395 | 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 | |
Mechanical properties of API 5CT 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 | - | - |
API 5CT ERW Pipe
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