Oil casing pipe details
Standard: API 5CT, API 5D
Steel Grades: K55, J55, L80-1 ,N80,C90,C95, P110, T95
Size: 2 3/8"-4 1/2"*0.167"-0630"
Casing Pipe
Tubing steel pipe
Oil Casing Pipe/Steel Pipe
Including ordinary casing, Anti-collapse casing, Anti-corrosion casing, Hi-strength casing
Serves as walls of a well;
Standard: API 5CT
Steel Grades: k55, J55, L80,N80,C90,C95, P110 T95, M65,E75,X95,G105,S135
1) Tubing
OD: 2 3/8" -----4 1/2"
WT: 0.167" -----0.630"
Note: P : Plain end, N: Non upset, U: External upset, T&C: Threaded and coupled.
2) Casing
OD: 2 3/8“ ----20"
WT: 0.205" --- 0.5"
Note: P: Plain end, S: Short round thread, L: Long round thread
Length
R1 R2 R3
Tubing 6.10 -7.32 m 8.53-9.75m 11.58-12.80m
Casing 4.88 - 7.62m 6.72 -10.36m 10.36 - 14.63m
3) Drill Pipe
OD: 2 3/8" - 5 1/2"
WT: 0.280" - 0.449"
Note: EU: External upset , IEU: Internal & External upset
Thread of tool joint are right-hand or left hand
Thread are coper- plated or phoshphated
| 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 | H40 | - | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - |
| J55 | - | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - | |
| K55 | - | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - | |
| N80 | 1 | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - | |
| N80 | Q | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - | |
| R95 | - | - | 0.45 c | - | 1.9 | - | - | - | - | - | - | 0.03 | 0.03 | 0.45 | |
| 2 | M65 | - | - | - | - | - | - | - | - | - | - | - | 0.03 | 0.03 | - |
| L80 | 1 | - | 0.43 a | - | 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 | |
| C90 | 1 | - | 0.35 | - | 1.2 | 0.25 b | 0.85 | - | 1.5 | 0.99 | - | 0.02 | 0.01 | - | |
| T95 | 1 | - | 0.35 | - | 1.2 | 0.25 d | 0.85 | 0.4 | 1.5 | 0.99 | - | 0.02 | 0.01 | - | |
| C110 | - | - | 0.35 | - | 1.2 | 0.25 | 1 | 0.4 | 1.5 | 0.99 | - | 0.02 | 0.005 | - | |
| 3 | P110 | e | - | - | - | - | - | - | - | - | - | - | 0.030 e | 0.030 e | - |
| 4 | Q125 | 1 | - | 0.35 | 1.35 | - | 0.85 | - | 1.5 | 0.99 | - | 0.02 | 0.01 | - | |
| a The carbon content for L80 may be increased up to 0.50 % maximum if the product is oil-quenched. b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the wall thickness is less than 17.78 mm. c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched. d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm. e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum. NL = no limit. Elements shown shall be reported in product analysis. |
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Mechanical Properties
| Standard | Type | Tensile Strength MPa |
Yield Strength MPa |
Hardness Max. |
| API SPEC 5CT | J55 | ≥517 | 379 ~ 552 | ---- |
| K55 | ≥517 | ≥655 | --- | |
| N80 | ≥689 | 552 ~ 758 | --- | |
| L80(13Cr) | ≥655 | 552 ~ 655 | ≤241HB | |
| P110 | ≥862 | 758 ~ 965 | ---- |
