Complaint
| Product Name | API 5CT Oil Well Casing tubing Pipe steel pipe |
| Material | Carbon Steel/ Steel Coil |
| Color | Black Painting or bare pipe |
| Standard | API 5CT/ GOST/ GB/ EM-18-00/05 |
| Grade | H40/ J55/ K55/ N80 / N80Q /R95 /P110 /Q125... |
| Dimension | OD: 114.3-508mm WT: 5.21-16.13mm |
| Thread | STC, LTC, BTC, special clearance, XC,EUE,EU DAW ECT |
| Used | Used as the Structural Retainer for the Walls of Oil, Gas Wells |
| Ends | BTC,JEF BEAR, STC, LTC,Customerize |
Lengths:
Oil Casing | Range 1 | Range 2 | Range 3 |
4.88~7.62 | 7.62~10.36 | 10.36~14.63 |
Group | Grade | Type | Total elongation under load % | Yield strength Mpa | Tensile strength min MPa | Hardness max | ||
min | max | HRC | HBW | |||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
1 | 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 | - | - | |
2 | 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?2 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | |
C95 | - | 0.5 | 655 | 758 | 724 | - | - | |
T95 | 1?2 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | |
3 | P110 | - | 0.6 | 758 | 965 | 862 | - | - |
4 | Q125 | All | 0.65 | 862 | 1034 | 931 | - | - |
Coupling Pipe Grade Identification By Paint Color
| Coupling colour code | |||||
| Grade | Grade Type | Colour(s) for Coupling | Number andcolour of bands
for product | Picture | |
| EntireCoupling | Band(s) | ||||
| H40 | None | Same as for pipe | None/black band at the manufacturer's option | ||
| J55 Tubing | Bright Green | None | One Bright Green | ||
| J55 Casing | Bright Green | One White | One Bright Green | ||
| K55 | Bright Green | None | Two Bright Green | ||
| M65 | M65Pipe uses L80Type 1Couplings | One Bright GreenOne Blue | |||
| N80 | 1 | Red | None | One Red | |
| N80 | Q | Red | One Green | One RedOne Bright Green | |
| R95 | Brown | None | One Brown | ||
| L80 | 1 | Red | One Brown | One RedOne Brown | |
| L80 | 9Cr | None | Two Yellow | One Red,One Brown,
Two Yellow | |
| L80 | 13Cr | None | One Yellow | One Red,One Brown,
One Yellow | |
| C90 | 1 | Purple | None | One Purple | |
| T95 | 1 | Silver | None | One Silver | |
| C110 | White | Two Brown | One White,Two Brown | ||
| P110 | White | None | One White | ||
| Q125 | Orange | None | One Orange | ||
