API 5CT L80 petroleum casing pipe is the lifeline to maintain the operation of the oil well. The geological conditions are different as well as the underground dynamics are complicated and chaotic. Pipes are subject to be dictated under various forces, such as tensile force, pressure, bending force, and torsional stress. Under such circumstances the demand for superior quality for the casing pipe is must. In case of any failure, disastrous results such as production interruption or well termination are inevitable.
API L80 casing tubing conforming to API specification 5CT with a controlled yield strength with hardness test requirement of 23 HRC maximum; usually used in wells with sour (H2S) environments or deep sour wells
API 5CT K55 J55 N80 L80 P110 Casing/Tubing
Specifications of API 5CT L80 Oilfield Steel Casing Pipe
| Material: | L80, steel grade |
| Outer Diameter: | 4 1/2″-20″, (114.3-508mm) |
| Wall Thickness: | 5.12-16.13mm |
| Thread Type: | Buttress thread casing, Long round thread casing, Short round thread casing |
| Function: | It is used to protect the tubing pipe. |
Parameters of API 5CT L80 Oilfield Steel Casing Pipe
| Group | Steel Grade | Type | Carbon | Manganese | Molybdenum | Chromium | Nickel
Max. |
Copper
Max. |
Phosphorus
Max. |
Sulfur
Max. |
Silicon
Max. |
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| Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | ||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 2 | L80 | 1 | – | 0.43 | – | 1.9 | – | – | – | – | 0.25 | 0.35 | 0.03 | 0.03 | 0.45 |
| L80 | 9Cr | – | 0.15 | 0.3 | 0.6 | 0.9 | 1.1 | 8 | 10 | 0.5 | 0.25 | 0.02 | 0.01 | 1 | |
| L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1 | – | – | 12 | 14 | 0.5 | 0.25 | 0.02 | 0.01 | 1 | |
| Any product is subject oil quenching process above, the upper limit of the carbon content of L80 steel grade can be increased to 0.50%. | |||||||||||||||
