API 5CT Grade K55 Material Suppliers
K55 Casing Tube manufacturer in india.
Check K55 Seamless tubing Stock at best price.
API 5CT Stainless Steel Pipe
NSSMC ERW Casing Tubing
K55 Gas API Casing Pipe
Tubos India is one of the large manufacturers for high quality API 5CT K55 Tubes. API 5CT K55 casing pipe is very similar to J55 Casing Pipe. K55 and J55 have no significant difference in the yield strength and chemical compositions. But the tensile strength of K55 is higher than the J55 casing steel. API 5CT K55 has better thermal fatigue resistance and crack resistance.
In case of thermal production, the heavy wall of K55 casing is appropriate instead of J55 casing. In oil drilling, API K55 casing or tubing is relatively common type.
Table of contents
- API 5CT K55 Casing Tubing Specfications
- API 5CT Gr. K55 Casing Tubing Chemical Composition
- API K55 Casing Tubing Dimensions
- API 5CT Grade K55 Casing Tubing Steel Color Code
- API 5CT K55 Casing Tubing Mechanical Properties
- API 5CT K55 Casing Tubing Tensile & Hardness Requirement
- API 5CT K55 Casing Tubing Features
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API 5CT K55 CASING TUBING SPECIFICATIONS | ||
| API 5CT K55 Casing Tubing Available Sizes | : | 2 3/8″, 2 7/8″ and 3 ½” Outer Diameter |
| API 5CT K55 Casing Tubing Grades | : | J55, J55-FBNAU, N80, L80, P110 |
| API 5CT K55 Casing Tubing | : | 1 1/4 “ – 2 1/16” Nom. |
| API 5CT K55 Casing Tubing Standards | : | API SPEC 5CT |
| K55 API 5CT Casing Tubing Model in Common Use | : | 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2" |
| API 5CT K55 Casing Tubing Length Range | : | R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m) |
| API 5CT K55 Casing Tubing Steel Grade (Casing Grades, Tubing Grades) | : | J55, K55, N80-1, N80-Q, L80, P110 |
| K55 API 5CT Casing Tubing Type of Screw Thread | : | Non upset threaded end(NUE), External upset threaded end(EUE) |
| API 5CT K55 Casing Tubing Specialties | : |
|
| API 5CT K55 Casing Tubing End Finishing | : | External Upset Ends (EUE), Flush Joint, PH6 (and equivalent connections), Integral Joint (IJ) |
API 5CT Grade K55 Oil Well Drilling Casing Pipes are comparatively low steel grade.
Inspection
Physical properties are checked and each length hydrostatically tested, normally to only 3,000 psi in the plain end (unthreaded) condition. The following are also checked:
- Dimensions
- Lengths
- Weights
- Straightness
Part of this inspection is to drift all lengths.
Despite all the American Petroleum Institute (API) specifications and testing, some tubing defects are still found after delivery; thus, some operators do further inspection.
Inspection Method
- Size and surface inspection
- NDT and pressure test and third party certication
- Electromagnetic
- Magnetic particle
- Physical and chemical analysis
- Hydrostatic
- Drifting test
- Hardness and pressure test.
- Ultrasonic
API 5CT K55 Casing Tubing Chemical Composition
| 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. | |||||||||||||||
K55 Casing Tubing Dimensions
| 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. |
Oil Tube For Petroleum And Natural Gas Industries
Name of Pipes | Specification | Steel Grade | Standard | ||
|---|---|---|---|---|---|
| D | (S) | (L) | ||
(mm) | (mm) | (m) | |||
Petroleum Casing Pipe | 127-508 | 5.21-16.66 | 6-12 | API Spec 5CT (8) | |
Petroleum Tubing | 26.7-114.3 | 2.87-16.00 | 6-12 | J55. M55. K55. | API Spec 5CT (8) |
Coupling | 127-533.4 | 12.5-15 | 6-12 | J55. M55. K55. | API Spec 5CT (8) |
API 5CT Grade K55 Casing Tubing Steel Color Code
| Name | API 5Ct Casing J55 | API 5Ct Casing K55 | API 5Ct Casing N80-1 | API 5Ct Casing N80-Q | API 5Ct Casing L80-1 | API 5Ct Casing P110 |
|---|---|---|---|---|---|---|
| Casing | a bright green band | two bright green bands | a bright red band | a bright red band + a green band | a red band + a brown band | a bright white band |
| Coupling | entire green coupling + a white band | entire green coupling | entire red coupling | entire red coupling + a green band | entire red coupling + a brown band | entire white coupling |
ISO/API casing/ API 5CT K55 Casing Tubing specifications
| Codea | Outer Dia | Nominal weight (with thread and coupling) b,c | Wall Thickness | End processing type | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | kg/m | mm | H40 | J55 | M65 | L80 | N801 | C90d | P110 | Q125d | ||
| In | Lb/ft | K55 | C95 | N80Q | T95d | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 4-1-2 | 9.5 | 114.3 | 14.14 | 5.21 | S | S | S | - | - | - | - | - |
| 4-1-2 | 10.5 | 114.3 | 15.63 | 5.69 | - | SB | - | - | - | - | - | |
| 4-1-2 | 11.6 | 114.3 | 17.26 | 6.35 | - | SLB | LB | LB | LB | - | ||
| 4-1-2 | 13.5 | 114.3 | 20.09 | 7.37 | - | - | LB | LB | - | |||
| 4-1-2 | 15.1 | 114.3 | 22.47 | 8.56 | - | - | - | - | - | - | LB | |
| 5 | 11.5 | 127 | 17.11 | 5.59 | - | S | S | - | - | - | - | - |
| 5 | 13 | 127 | 19.35 | 6.43 | - | SLB | SLB | - | - | - | - | - |
| 5 | 15 | 127 | 22.32 | 7.52 | - | SLB | LB | LB | - | |||
| 5 | 18 | 127 | 26.79 | 9.19 | - | - | LB | LB | ||||
| 5 | 21.4 | 127 | 31.85 | 11.1 | - | - | LB | LB | LB | |||
| 5 | 23.2 | 127 | 34.53 | 12.14 | - | - | - | LB | LB | |||
| 5 | 24.1 | 127 | 35.86 | 12.7 | - | - | - | LB | LB | |||
| 5-1-2 | 14 | 139.7 | 20.83 | 6.2 | S | S | S | - | - | - | - | - |
| 5-1-2 | 15.5 | 139.7 | 23.07 | 6.98 | - | SLB | SLB | - | - | - | - | - |
| 5-1-2 | 17 | 139.7 | 25.3 | 7.72 | - | SLB | LB | LB | - | |||
| 5-1-2 | 20 | 139.7 | 29.76 | 9.17 | - | - | LB | LB | - | |||
| 5-1-2 | 23 | 139.7 | 34.23 | 10.54 | - | - | LB | LB | ||||
| 6-5-8 | 20 | 168.28 | 29.76 | 7.32 | S | SLB | SLB | - | - | - | - | - |
| 6-5-8 | 24 | 168.28 | 35.72 | 8.94 | - | SLB | LB | LB | - | |||
| 6-5-8 | 28 | 168.28 | 41.67 | 10.59 | - | - | LB | LB | - | |||
| 6-5-8 | 32 | 168.28 | 47.62 | 12.06 | - | - | - | LB | LB | |||
| 7 | 17 | 177.8 | 25.3 | 5.87 | S | - | - | - | - | - | - | - |
| 7 | 20 | 177.8 | 29.76 | 6.91 | S | S | S | - | - | - | - | - |
| 7 | 23 | 177.8 | 34.23 | 8.05 | - | SLB | LB | LB | - | - | ||
| 7 | 26 | 177.8 | 38.69 | 9.19 | - | SLB | LB | LB | - | |||
| 7 | 29 | 177.8 | 43.16 | 10.36 | - | - | LB | LB | - | |||
| 7 | 32 | 177.8 | 47.62 | 11.51 | - | - | LB | LB | - | |||
| 7 | 35 | 177.8 | 52.09 | 12.65 | - | - | - | LB | LB | |||
| 7-5-8 | 24 | 193.68 | 35.72 | 7.62 | S | - | - | - | - | - | - | - |
| 7-5-8 | 26.4 | 193.68 | 39.29 | 8.33 | - | SLB | SLB | LB | LB | - | ||
| 7-5-8 | 29.7 | 193.68 | 44.2 | 9.52 | - | - | LB | LB | - | |||
| 7-5-8 | 33.7 | 193.68 | 50.15 | 10.92 | - | - | LB | LB | - | |||
| 7-5-8 | 39 | 193.68 | 58.04 | 12.7 | - | - | - | LB | LB | LB | ||
| 7-5-8 | 42.8 | 193.68 | 63.69 | 14.27 | - | - | - | LB | LB | |||
| 7-5-8 | 45.3 | 193.68 | 67.41 | 15.11 | - | - | - | LB | LB | |||
| 7-5-8 | 47.1 | 193.68 | 70.09 | 15.88 | - | - | - | LB | LB | |||
| 8-5-8 | 24 | 219.08 | 35.72 | 6.71 | - | S | S | - | - | - | - | - |
| 8-5-8 | 28 | 219.08 | 41.67 | 7.72 | S | - | S | - | - | - | - | - |
| 8-5-8 | 32 | 219.08 | 47.62 | 8.94 | S | SLB | SLB | - | - | - | - | - |
| 8-5-8 | 36 | 219.08 | 53.57 | 10.16 | - | SLB | SLB | LB | LB | - | ||
| 8-5-8 | 40 | 219.08 | 59.53 | 11.43 | - | - | LB | LB | - | |||
| 8-5-8 | 44 | 219.08 | 65.48 | 12.7 | - | - | - | LB | LB | |||
| 8-5-8 | 49 | 219.08 | 72.92 | 14.15 | - | - | - | LB | LB | |||
| Codea | Outer diameter | Nominal weight (with thread and coupling) b,c | Wall thickness | End processing type | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | kg/m | mm | H40 | J55 | M65 | L80 | N80 | C90d | P110 | Q125d | ||
| In | Lb/ft | K55 | C95 | 1, Q | T95d | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 9-5-8 | 32.3 | 244.48 | 48.07 | 7.92 | S | - | - | - | - | - | - | - |
| 9-5-8 | 36 | 244.48 | 53.57 | 8.94 | S | SLB | SLB | - | - | - | - | - |
| 9-5-8 | 40 | 244.48 | 59.53 | 10.03 | - | SLB | SLB | LB | - | - | ||
| 9-5-8 | 43.5 | 244.48 | 64.73 | 11.05 | - | - | LB | LB | LB | - | ||
| 9-5-8 | 47 | 244.48 | 69.94 | 11.99 | - | - | LB | LB | LB | |||
| 9-5-8 | 53.5 | 244.48 | 79.62 | 13.84 | - | - | - | LB | LB | LB | ||
| 9-5-8 | 58.4 | 244.48 | 86.91 | 15.11 | - | - | - | LB | LB | LB | ||
| 10-3-4 | 32.75 | 273.05 | 48.74 | 7.09 | S | - | - | - | - | - | - | - |
| 10-3-4 | 40.5 | 273.05 | 60.27 | 8.89 | S | SB | SB | - | - | - | - | - |
| 10-3-4 | 45.5 | 273.05 | 67.71 | 10.16 | - | SB | - | - | - | - | - | |
| 10-3-4 | 51 | 273.05 | 75.9 | 11.43 | - | SB | SB | SB | - | |||
| 10-3-4 | 55.5 | 273.05 | 82.59 | 12.57 | - | - | SB | SB | SB | - | ||
| 10-3-4 | 60.7 | 273.05 | 90.33 | 13.84 | - | - | - | - | - | SB | SB | |
| 10-3-4 | 65.7 | 273.05 | 97.77 | 15.11 | - | - | - | - | - | SB | SB | |
| 11-3-4 | 42 | 298.45 | 62.5 | 8.46 | S | - | - | - | - | - | - | - |
| 11-3-4 | 47 | 298.45 | 69.94 | 9.53 | - | SB | SB | - | - | - | - | - |
| 11-3-4 | 54 | 298.45 | 80.36 | 11.05 | - | SB | SB | - | - | - | - | - |
| 11-3-4 | 60 | 298.45 | 89.29 | 12.42 | - | SB | SB | SB | SB | |||
| 13-3-8 | 48 | 339.72 | 71.43 | 8.38 | S | - | - | - | - | - | - | - |
| 13-3-8 | 54.5 | 339.72 | 81.1 | 9.65 | - | SB | SB | - | - | - | - | - |
| 13-3-8 | 61 | 339.72 | 90.78 | 10.92 | - | SB | SB | - | - | - | - | - |
| 13-3-8 | 68 | 339.72 | 101.19 | 12.19 | - | SB | SB | SB | - | |||
| 13-3-8 | 72 | 339.72 | 107.15 | 13.06 | - | - | - | SB | SB | SB | ||
| 16 | 65 | 406.4 | 96.73 | 9.53 | S | - | - | - | - | - | - | - |
| 16 | 75 | 406.4 | 111.61 | 11.13 | - | SB | SB | - | - | - | - | - |
| 16 | 84 | 406.4 | 125.01 | 12.57 | - | SB | SB | - | - | - | - | - |
| 18-5-8 | 87.5 | 473.08 | 130.21 | 11.05 | S | SB | SB | - | - | - | - | - |
| 20 | 94 | 508 | 139.89 | 11.13 | SL | SLB | SLB | - | - | - | - | - |
| 20 | 106.5 | 508 | 158.49 | 12.7 | - | SLB | SLB | - | - | - | - | - |
| 20 | 133 | 508 | 197.93 | 16.13 | - | SLB | - | - | - | - | - | - |
| S-Short round thread, L-Long round thread, B-Buttress thread | ||||||||||||
| a. Code is used for ordering reference. | ||||||||||||
| b. The nominal weight of threaded and coupled casing (column 2) is shown for reference only. | ||||||||||||
| c. Martensitic chromium steel (L80 9Cr and 13Cr) differs from carbon steel in density. The shown weight of martensitic chromium steel is not an exact value. The mass correction factor 0.989 can be used. | ||||||||||||
| d. C90, T95 and Q125 steel grade casing should be supplied according to specification, weight and wall thickness listed in the above table or order. | ||||||||||||
API 5CT Gr. k55 Casing Mechanical Properties
| Standard | Type | Tensile Strength MPa | Yield Strength MPa | Hardness Max. |
|---|---|---|---|---|
| API SPEC 5CT | API 5Ct Casing J55 | ≥517 | 379 ~ 552 | ---- |
| API 5Ct Casing K55 | ≥517 | ≥655 | --- | |
| API 5Ct Casing N80 | ≥689 | 552 ~ 758 | --- | |
| API 5Ct Casing L80(13Cr) | ≥655 | 552 ~ 655 | ≤241HB | |
| API 5Ct Casing P110 | ≥862 | 758 ~ 965 | ---- |
API 5CT K55 Casing Tubing Tensile & Hardness Requirement
| Group | Grade | Type | Total elongation under load % | Yield strength MPa | Tensile strength min. MPa | Hardness a max. | Specified wall thickness mm | Allowable hardness variation b HRC | ||
|---|---|---|---|---|---|---|---|---|---|---|
| min. | max . | HRC | HBW | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 1 | H40 | - | 0.5 | 276 | 552 | 414 | - | - | - | - |
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 | - | - | - | - | |
R95 | - | 0.5 | 655 | 758 | 724 | - | - | - | - | |
| 2 | M65 | - | 0.5 | 448 | 586 | 586 | 22 | 235 | - | - |
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 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
C110 | - | 0.7 | 758 | 828 | 793 | 30 | 286 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39. ≥ 25.40 | 3.0 4.0 5.0 6.0 | |
| 3 | P110 | - | 0.6 | 758 | 965 | 862 | - | - | - | - |
| 4 | Q125 | 1 | 0.65 | 862 | 1034 | 931 | b | - | ≤ 12.70 12.71 to 19.04 ≥ 19.05 | 3.0 4.0 5.0 |
| aIn case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. bNo hardness limits are specified, but the maximum variation is restricted in accordance with 7.8 and 7.9 of API Spec. 5CT. | ||||||||||
API 5CT K55 Casing Tubing Features
- API 5CT K55 Casing Tubing is offered with a free length range from 8m 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%.
- Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT K55 Casing Tubing coupling.
- Any deformation such as hairline, separation, crease, 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.
- The surface of thread of coupling and API 5CT K55 Casing Tubing should be smooth without any burr, tear or other defects that may have a negative impact on the strength and close connection.