API 5CT K55 Casing Specifications
| Standards: | API SPEC 5CT |
|---|---|
| Model in Common Use: | 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2" |
| Length Range: | R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m) |
| Steel Grade (Casing Grades, Tubing Grades): | J55, K55, N80-1, N80-Q, L80, P110 |
| Type of Screw Thread: | Non upset threaded end(NUE), External upset threaded end(EUE) |
| Specialties |
Threading Heat treating External upset Drifting (Full-length, or just ends) Hydrostatic Testing Full third-party inspection capabilities (EMI, SEA, and Weld Line) Couplings – EUE, AB Modified, turned down, special clearance couplings Coating to customer specifications Pup Joints |
GNEE Supply K55 Pipe Specification
| PRODUCT | GRADE | DIAMETER | END TYPE |
|---|---|---|---|
| K55 TUBING | J55, JFBNAU, L80, P110, 1% Chrome | 2.375" – 3.5" | Plain End EUE 8RD |
| K55 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 |
GNEE Supply K55 OCTG Pipe Specification
| 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 |
GNEE Supply Pipe Casing Sizes Specification
| Pipe Casing Sizes, Oilfield Casing Sizes & Casing Drift Sizes | |
|---|---|
| Outer Diameter (Casing Pipe Sizes) | 4 1/2"-20", (114.3-508mm) |
| Standard Casing Sizes | 4 1/2"-20", (114.3-508mm) |
| Thread Type | Buttress thread casing, Long round thread casing, Short round thread casing |
| Function | It can protect the tubing pipe. |
GNEE Supply API 5CT K55 Petroleum Pipe Specification
| Name of Pipes | Specification | Steel Grade | Standard | ||
|---|---|---|---|---|---|
| D | (S) | (L) | |||
| (mm) | (mm) | (m) | |||
| Petroleum Casing Pipe |
127-508 |
5.21-16.66 |
6-12 |
J55. M55. K55. L80. N80. P110. |
API Spec 5CT (8) |
| Petroleum Tubing |
26.7-114.3 |
2.87-16.00 |
6-12 |
J55. M55. K55. L80. N80. P110. |
API Spec 5CT (8) |
| Coupling |
127-533.4 |
12.5-15 |
6-12 |
J55. M55. K55. L80. N80. P110. |
API Spec 5CT (8) |
API 5CT K55 Casing Tubing Chemical Composition, mass fraction (%)
| Group | Grade | Type | C | Mn | Mo | Cr | Ni max. | Cu max. | P max. | S max. | Si max. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | min. | max. | ||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
|
1 |
K55 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0.03 |
0.03 |
- |







