API 5CT Grade N80 Tubing Material Supplier
N80 Casing Pipe Manufacturer in India.
Check 5CT N80 welding Casing Pipe dimension & Wide Stock at best price.
N80 Casing Tubing
API 5CT N80 Welded Steel Pipe
API 5CT N80 Oil Casing Pipe
Tubos India is one of the large manufacturers for high quality API 5CT N80 Pipes. API 5CT N80 oil field Pipe contains N80-Q and N80-1 types. N80-Q and N80-1 both materials are consistent regarding the chemical composition, mechanical attributes. Both are various in the heat treatment. During the heat treatment, N80-Q steel is treated by tempering and quenching, while the N80-1 steel is treated by tempering and normalizing. Due to this the internal pressure and collapsing strength of N80-Q is higher than that of N80-1. Oilfield tubing & API 5CT Gr. N80 Casing Tubing can be widely applicable to construction, shipbuilding, petroleum, smelting, aviation, food, paper, electric power, medical equipment, boilers, chemical industry, heat exchangers, metallurgy
Specification includes 1.9 inch(48.3mm), 2 7/8 inch(73.03mm), 2 3/8 inch(60.3mm), 3 1/2 inch(88.9mm), 4 1/2 inch(114.3mm), 4 inch(101.6mm) etc. N80 mechanical properties are higher than other types of API 5CT. The oilfield tubing can be classified as EUE type and NUE type. Both sealing performance and mechanical property of the tubing are also required to correspond with the oil casing pipes. Due to high capability of N80, API 5CT casing pipes are widely applied in coal bed methane extraction, natural gas as well as in geothermal wells.
Table of contents
- API 5CT N80 Casing Tubing Specfications
- API 5CT Gr. N80 Casing Tubing Chemical Composition
- N80 Casing Tubing Dimensions
- API 5CT Grade N80 Casing Tubing Steel Color Code
- API 5CT N80 Casing Tubing Mechanical Properties
- API 5CT N80 Casing Tubing Tensile & Hardness Requirement
- API 5CT N80 Casing Tubing Features
|
API 5CT N80 CASING TUBING SPECIFICATIONS | ||
| API 5CT Casing Grade | Group.1 | H40/PSL.1, J55/PSL.1, J55/PSL.2, J55/PSL.3, K55/PSL.1, K55/PSL.2, K55/PSL.3, N80(1)/PSL.1, N80(1)/PSL.2, N80(Q)/PSL.1, N80(Q)/PSL.2, N80(Q)/PSL.3 |
| API 5CT N80 Casing Group.2 | M65/PSL.1, M65/PSL.3, L80/PSL.2, L80(1)/PSL.1, L80(1)/PSL.3, L80(9Cr)/PSL.1, L80(13Cr)/PSL.1, C90/PSL.1, C90/PSL.2, C90/PSL.3, T95/PSL.1, T95/PSL.2T95/PSL.3 | |
| API 5CT N80 Casing Group.3 | P110/PSL.1, P110/PSL.2, P110/PSL.3 | |
| API 5CT N80 Casing Group.4 | Q125/PSL.1, Q125/PSL.2, Q125/PSL.3 | |
| API 5CT N80 Casing Outside Diameter Ranges | Tubing | 1.315 inch to 4 1/2 inch or 48.26mm to 114.3mm |
| API 5CT N80 Casing | 4 1/2 inch to 13 3/8 inch or 114.3mm to 339.72mm | |
| API 5CT N80 Casing Wall Thickness | : | According to API 5CT Standard |
| API 5CT N80 Casing Minimum Order Quantity | : | 1 Ton |
| API 5CT N80 Casing Length | Tubing | R1 (6.10m to 7.32m), R2 (8.53m to 9.75m), R3 (11.58m to 12.80m) |
| API 5CT N80 Casing | R1 (4.88m to 7.62m), R2 (7.62m to 10.36m), R3 (10.36m to 14.63m) | |
| API 5CT N80 Casing Type | : | Seamless |
| API 5CT N80 Casing Length | Tubing | P, I, N, U |
| API 5CT N80 Casing | P, S, B, L | |
| API 5CT N80 Casing Standards | : | API SPEC 5CT |
| API 5CT N80 Casing Length Range | : | R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m) |
| API 5CT N80 Casing Model in Common Use: | : | 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2" |
| API 5CT N80 Casing Steel Grade (Casing Grades, Tubing Grades): | : | J55, K55, N80-1, N80-Q, L80, P110 |
| API 5CT N80 Casing Specialties | : |
|
Top quality oilfield casing carbon seamless steel Grade N80 oil well drilling tubes.
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
- Drifting test
- Hardness and pressure test.
- Electromagnetic
- Physical and chemical analysis
- NDT and pressure test and third party certication
- Hydrostatic
- Magnetic particle
- Ultrasonic
API 5CT Gr. N80 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. | |||||||||||||||
API 5CT N80 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 N80 Casing Tubing Steel Color Code
| Name | J55 | K55 | N80-1 | N80-Q | L80-1 | 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 N80 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 | SB | - | - | - | - | - |
| 4-1-2 | 11.6 | 114.3 | 17.26 | 6.35 | - | SLB | 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 | 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 | 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 | LB | - | ||
| 5-1-2 | 23 | 139.7 | 34.23 | 10.54 | - | - | LB | 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 | |||
| 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 | ||||
| 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 | - | |||
| 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 | |||
| 9-5-8 | 58.4 | 244.48 | 86.91 | 15.11 | - | - | - | 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 | SB | - | - | - | - | - |
| 10-3-4 | 51 | 273.05 | 75.9 | 11.43 | - | SB | SB | SB | SB | SB | SB | - |
| 10-3-4 | 55.5 | 273.05 | 82.59 | 12.57 | - | - | SB | SB | SB | SB | SB | - |
| 10-3-4 | 60.7 | 273.05 | 90.33 | 13.84 | - | - | - | - | - | SB | SB | SB |
| 10-3-4 | 65.7 | 273.05 | 97.77 | 15.11 | - | - | - | - | - | SB | 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 | 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 | SB | SB | SB | - |
| 13-3-8 | 72 | 339.72 | 107.15 | 13.06 | - | - | - | SB | SB | 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 N80 Casing Tubing 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 N80 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 |
| a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. b No hardness limits are specified, but the maximum variation is restricted in accordance with 7.8 and 7.9 of API Spec. 5CT. | ||||||||||
API 5CT N80 Casing Tubing Features
- API 5CT N80 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%.
- 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 N80 Casing Tubing should be smooth without any tear, burr or other defects that may have a negative impact on the strength and close connection.
- Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT N80 Casing Tubing coupling.