General purpose pipe manufactured to API specification 5CT. Available in both standard Quench and Tempered API N80 and lower cost Normalized API N80 (walls less than 0.5″). Inspection, testing and dimensions are in accordance with API 5CT for grade N80. Charpy V-notch impact test absorbed energy results meet API SR16 and are lower in Normalized N80 than Quench and Tempered N80.
| PRODUCT | GRADE | DIAMETER | END TYPE |
| N80 TUBING | J55, JFBNAU, L80, P110, 1% Chrome | 2.375″ – 3.5″ | Plain End EUE 8RD |
| N80 CASING | J-55, L80 HC, P110 HC | 4.5″ – 9.625″ (J55, L80 HC, P110 HC) 10.75” – 20” (J55) | Plain End, STC, LTC, BTC |
N80 TUBING SIZES, CASING DRIFT SIZES AND AVAILABLE GRADES:
| OD | Wall | PE # / ft | T&C # / ft | Collar | API Drift | Available Grades |
| 2.375″ | .190 | 4.44 | 4.7 | EUE, AB MOD |
1.901 | J55, J-FBNAU, N80, L80, P110 |
| 2.875″ | .217 | 6.17 | 6.5 | EUE, AB MOD |
2.347 | J55, J-FBNAU, N80, L80, P110 |
| 3.5″ | .254 | 8.81 | 9.3 | EUE, AB MOD |
2.867 | J55, J-FBNAU, N80, L80, P110 |
Chemical Composition
C |
Mn | Mo | Cr | Ni | Cu | Ti | P | S | Si | V | Al | |
| Min | - | - | - | - | - | - | - | - | - | - | - | - |
| Max | - | - | - | - | - | - | - | 0.030 | 0.030 | - | - | - |
Mechanical Properties
| Tensile Strength | 689 MPa min | 100,000 psi min |
| Yield Strength | 552 MPa min | 758 MPa max |
| 80,000 psi min | 110,000 psi max | |
| Total Elongation Under Load | 0.500 % | - |
| Hardness | - | - |
API 5CT N80 Casing Tubing Features
API 5CT N80 Casing Tubing is offered with a free length range from 8 to 13m on basis of the SY/T6194-96 norm. However, it is also available no less than 6m length and its quantity should be no more than 20%
Any deformation such as crease, hairline, separation, crack or scab is not acceptable on both inner and outer surfaces of the product. All these defects should be completely removed, and the removed depth must not exceed 12.5% of nominal wall thickness.
Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT N80 Casing Tubing coupling
The surface of thread of coupling and API 5CT N80 Casing Tubing should be smooth without any burr, tear or other defects that may have a negative impact on the strength and close connection.
API 5CT N80 Casing Tubing Packaging
In compliance with the regulation of SY/T6194-96, the domestic API 5CT N80 Casing Tubing should be strapped with steel wire or belt. The protection ring should be screwed on the exposed part of the thread of each casing pipe and its coupling to well protect the thread.
Post time: Oct-22-2021