API 5CT Q125 Casing
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API 5CT Q125 Casing is a API 5CT Oil Casing Pipe & mainly used for oil well drilling. We manufacture API 5CT Q125 Casing in accordance with the SY/T6194-96 standard, it is available as short thread type and long thread type supplied with their couplings.
According to American Petroleum Institute Standard API SPEC 5CT1988 1st edition, the steel grade of API 5CT oil casing pipe can be divided into ten types, including H-40, J-55, K-55, N-80, C-75, L-80, C-90, C-95, P-110 and Q-125. We supply the casing pipe & API 5CT Q125 Casing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option.
If you are interested in API 5CT Q125 Casing, we will supply you with the best price based on the highest quality.
What is API 5CT Q125 Casing?
OCTG: Oil country tubular goods is the classification used for a variety of downhole products
API 5CT Q125 Casing serves to transport both crude oil and natural gas from oil and gas layer to the surface pipeline after drilling is completed. It is able to bear the pressure produced by the exploitation process. After the outer surface is coated with a protective layer, the tubing is marked in accordance with the API 5CT standard and strapped with metal belt.
Our oilfield tubing & API 5CT Q125 Casing can be widely applicable to petroleum, construction, shipbuilding, smelting, aviation, electric power, food, paper, chemical industry, medical equipment, boilers, heat exchangers, metallurgy and so on.
This oilfield tubing can be classified as NUE type and EUE type. You can find here Casing Dimensions & Casing Wall Thickness.
Specifications include 1.9in(48.3mm), 2 3/8in(60.3mm), 2 7/8in(73.03mm), 3 1/2in(88.9mm), 4in(101.6mm), 4 1/2in(114.3mm) etc. The depth of our product for descending the well is basically identical to that of oil casing pipe. Both mechanical property and sealing performance of this tubing are also required to correspond with the oil casing pipe. Petroleum Tubing main steel grade includes J55, N80, C90, P110 and some others. for more details check below Casing And Tubing Tables, Casing Grade Table, & Casing Data Tables.
API 5CT Q125 Casing:
Q125 Casing is placed downhole to provide structural integrity to the wellbore and must withstand external-collapse pressure from rock formations and internal-yield pressure from fluid and gas. It must also hold its own deadweight and withstand the torque and transaxial pressure placed on it while running downhole.
API 5CT Q125 Tubing:
Q125 Tubing is placed within the casing. It is used to transport oil and gas from the source rock to the wellhead
API 5CT Q125 Casing Specification
API 5ct q125 seamless tubing with short round thread
|
Product Name
|
Seamless Oil Pipe |
|---|---|
|
Material
|
GR.B,ST52, ST35, ST42, ST45,X42, X46, X52, X56, X60, X65, X70,SS304, SS316 etc. |
|
Size
|
Size 1/4" to 24" Outside Diameter 13.7 mm to 610 mm |
|
Standard
|
API5L , ASTM A106 Gr.B, ASTM A53 Gr.B,ANSI A210-1996, ANSI B36.10M-2004 , ASTM A1020-2002,ASTM A179-1990 ,BS 3059-2,DIN 17175 ,DIN 1630 ,DIN 2448
|
|
Certificates
|
API5L, ISO 9001:2008,SGS, BV,CCIC |
|
Wall thickness
|
SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100 SCH120, SCH160, XS, XXS |
|
Surface Treatment
|
black paint, varnish, oil, galvanized, anti corrosion coatings |
|
Marking
|
Standard marking, or according to your request. Marking Method: Spray white paint |
|
Pipe Ends
|
Under 2 inch plain end. 2 inch and above Beveled. Plastic caps (small OD) ,Iron protector (large OD) |
|
Pipe Length
|
1. Single Random Length and double Random Length.
2. SRL:3M-5.8M DRL:10-11.8M or As clients requested length
3. fixed length(5.8m, 6m, 12m)
|
|
Packaging
|
Loose package; Packaged in bundles(2Ton Max); bundled pipes with two slings at the both end for easy loading and discharging; End with Plastic caps; wooden cases. |
|
Test
|
Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test. |
|
Application
|
oil pipe; gas pipe |
|
Advantages
|
1.Reasonable price with excellent quality
2.Abundant stock and prompt delivery
3.Rich supply and export experience, sincere service
4.Reliable forwarder, 2-hour away from port.
|
| Casing Pipe 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 |
|
| PRODUCT | GRADE | DIAMETER | END TYPE |
|---|---|---|---|
| Q125 TUBING | J55, JFBNAU, L80, P110, 1% Chrome | 2.375" – 3.5" | Plain End EUE 8RD |
| Q125 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 |
Q125 TUBING SIZES, CASING DRIFT SIZES AND AVAILABLE GRADES:
| 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 |
Casing Sizes And Grades, Casing And 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 |
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 Q125 Casing 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 |
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 Q125 Casing 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 | ---- |
API 5CT Q125 Casing Tensile and hardness requirements
| 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 as a manufacturing control in accordance with 7.8 and 7.9 of API Spec. 5CT. | ||||||||||
API 5CT Q125 Casing 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 Q125 Casing 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 | LB | LB | LB | - |
| 4-1-2 | 13.5 | 114.3 | 20.09 | 7.37 | - | - | LB | LB | LB | 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 | LB | LB | LB | - |
| 5 | 18 | 127 | 26.79 | 9.19 | - | - | LB | LB | LB | LB | LB | LB |
| 5 | 21.4 | 127 | 31.85 | 11.1 | - | - | LB | LB | LB | LB | LB | LB |
| 5 | 23.2 | 127 | 34.53 | 12.14 | - | - | - | LB | LB | LB | LB | LB |
| 5 | 24.1 | 127 | 35.86 | 12.7 | - | - | - | LB | LB | LB | 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 | LB | LB | LB | - |
| 5-1-2 | 20 | 139.7 | 29.76 | 9.17 | - | - | LB | LB | LB | LB | LB | - |
| 5-1-2 | 23 | 139.7 | 34.23 | 10.54 | - | - | LB | LB | LB | 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 | LB | LB | LB | - |
| 6-5-8 | 28 | 168.28 | 41.67 | 10.59 | - | - | LB | LB | LB | LB | LB | - |
| 6-5-8 | 32 | 168.28 | 47.62 | 12.06 | - | - | - | LB | LB | LB | 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 | LB | LB | - | - |
| 7 | 26 | 177.8 | 38.69 | 9.19 | - | SLB | LB | LB | LB | LB | LB | - |
| 7 | 29 | 177.8 | 43.16 | 10.36 | - | - | LB | LB | LB | LB | LB | - |
| 7 | 32 | 177.8 | 47.62 | 11.51 | - | - | LB | LB | LB | LB | LB | - |
| 7 | 35 | 177.8 | 52.09 | 12.65 | - | - | - | LB | LB | LB | 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 | LB | LB | - |
| 7-5-8 | 29.7 | 193.68 | 44.2 | 9.52 | - | - | LB | LB | LB | LB | LB | - |
| 7-5-8 | 33.7 | 193.68 | 50.15 | 10.92 | - | - | LB | LB | LB | LB | LB | - |
| 7-5-8 | 39 | 193.68 | 58.04 | 12.7 | - | - | - | LB | LB | LB | LB | LB |
| 7-5-8 | 42.8 | 193.68 | 63.69 | 14.27 | - | - | - | LB | LB | LB | LB | LB |
| 7-5-8 | 45.3 | 193.68 | 67.41 | 15.11 | - | - | - | LB | LB | LB | LB | LB |
| 7-5-8 | 47.1 | 193.68 | 70.09 | 15.88 | - | - | - | LB | LB | LB | 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 | LB | LB | - |
| 8-5-8 | 40 | 219.08 | 59.53 | 11.43 | - | - | LB | LB | LB | LB | LB | - |
| 8-5-8 | 44 | 219.08 | 65.48 | 12.7 | - | - | - | LB | LB | LB | LB | |
| 8-5-8 | 49 | 219.08 | 72.92 | 14.15 | - | - | - | LB | LB | LB | 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 | LB | LB | - | - |
| 9-5-8 | 43.5 | 244.48 | 64.73 | 11.05 | - | - | LB | LB | LB | LB | LB | - |
| 9-5-8 | 47 | 244.48 | 69.94 | 11.99 | - | - | LB | LB | LB | LB | LB | LB |
| 9-5-8 | 53.5 | 244.48 | 79.62 | 13.84 | - | - | - | LB | LB | LB | LB | LB |
| 9-5-8 | 58.4 | 244.48 | 86.91 | 15.11 | - | - | - | LB | LB | 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 | 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 Tubing Specifications
| Size | Linear Mass lb/ft | Outside diameter | Wall thickness | Type of end-finish | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade | ||||||||||||
| Non-upset T﹠C | Ex-Upset T﹠C | ln. | mm | ln. | mm | J-55 | L-80 | N-801, N-80Q | C-90 | T-95 | P-110 | |
| 2 3/8" |
4.00 |
-- |
2.375 |
60.33 |
0.167 |
4.24 |
PN |
PN |
PN |
PN |
PN |
-- |
|
4.60 |
4.70 |
2.375 |
60.33 |
0.190 |
4.83 |
PNU |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
5.80 |
5.95 |
2.375 |
60.33 |
0.254 |
6.45 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
6.60 |
-- |
2.375 |
60.33 |
0.295 |
7.49 |
-- |
P |
-- |
P |
P |
-- |
|
|
7.35 |
7.45 |
2.375 |
60.33 |
0.336 |
8.53 |
-- |
PU |
-- |
PU |
PU |
-- |
|
| 2 7/8" |
6.40 |
6.50 |
2.875 |
73.03 |
0.217 |
5.51 |
PUN |
PNU |
PNU |
PNU |
PNU |
PNU |
|
7.80 |
7.90 |
2.875 |
73.03 |
0.276 |
7.01 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
8.60 |
8.70 |
2.875 |
73.03 |
0.308 |
7.82 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
9.35 |
9.45 |
2.875 |
73.03 |
0.340 |
8.64 |
-- |
PU |
-- |
PU |
PU |
-- |
|
|
10.50 |
-- |
2.875 |
73.03 |
0.392 |
9.96 |
-- |
P |
-- |
P |
P |
-- |
|
|
11.50 |
-- |
2.875 |
73.03 |
0.440 |
11.18 |
-- |
P |
-- |
P |
P |
-- |
|
| 3 1/2" |
7.70 |
-- |
3.500 |
88.90 |
0.216 |
5.49 |
PN |
PN |
PN |
PN |
PN |
-- |
|
9.20 |
9.30 |
3.500 |
88.90 |
0.254 |
6.45 |
PNU |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
10.20 |
-- |
3.500 |
88.90 |
0.289 |
7.34 |
PN |
PN |
PN |
PN |
PN |
-- |
|
|
12.70 |
12.95 |
3.500 |
88.90 |
0.375 |
9.52 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
|
14.30 |
-- |
3.500 |
88.90 |
0.430 |
10.92 |
-- |
P |
-- |
P |
P |
-- |
|
|
15.50 |
-- |
3.500 |
88.90 |
0.476 |
12.09 |
-- |
P |
-- |
P |
P |
-- |
|
|
17.00 |
-- |
3.500 |
88.90 |
0.530 |
13.46 |
-- |
P |
-- |
P |
P |
-- |
|
| 4" |
9.50 |
-- |
4.000 |
101.60 |
0.226 |
5.74 |
PN |
PN |
PN |
PN |
PN |
PU |
|
10.70 |
11.00 |
4.000 |
101.60 |
0.262 |
6.65 |
PU |
PU |
PU |
PU |
PU |
PU |
|
|
13.20 |
-- |
4.000 |
101.60 |
0.33. |
8.38 |
-- |
P |
-- |
P |
P |
-- |
|
|
16.10 |
-- |
4.000 |
101.60 |
0.415 |
10.54 |
-- |
P |
-- |
P |
P |
-- |
|
|
18.90 |
-- |
4.000 |
101.60 |
0.500 |
12.70 |
-- |
P |
-- |
P |
P |
-- |
|
|
22.20 |
-- |
4.000 |
101.60 |
0.610 |
15.49 |
-- |
P |
-- |
P |
P |
-- |
|
| 4 1/2" |
12.60 |
12.75 |
4.500 |
114.30 |
0.271 |
6.88 |
PNU |
PNU |
PNU |
PNU |
PNU |
-- |
|
15.20 |
-- |
4.500 |
114.30 |
0.337 |
8.56 |
-- |
P |
-- |
P |
P |
-- |
|
|
17.00 |
-- |
4.500 |
114.30 |
0.380 |
9.65 |
-- |
P |
-- |
P |
P |
-- |
|
|
18.90 |
-- |
4.500 |
114.30 |
0.43 |
10.92 |
-- |
P |
-- |
P |
P |
-- |
|
|
21.50 |
-- |
4.500 |
114.30 |
0.500 |
12.70 |
-- |
P |
-- |
P |
P |
-- |
|
|
23.70 |
-- |
4.500 |
114.30 |
0.560 |
14.22 |
-- |
P |
-- |
P |
P |
-- |
|
|
26.10 |
-- |
4.500 |
114.30 |
0.630 |
16.00 |
-- |
P |
-- |
P |
P |
-- |
|
| Non-Upset T﹠C-Non-upset threaded and coupled Ex-Upset T﹠C-External upset threaded and coupled P-Plain end N-Non-upset threaded and coupled U-External upset threaded and coupled | ||||||||||||
API 5CT Q125 Casing Features
- API 5CT Q125 Casing is offered with a free length range from 8 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 crease, hairline, separation, 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.
- Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT Q125 Casing coupling.
- The surface of thread of coupling and API 5CT Q125 Casing should be smooth without any burr, tear or other defects that may have a negative impact on the strength and close connection.
API 5CT Q125 Casing Packaging
In compliance with the regulation of SY/T6194-96, the domestic API 5CT Q125 Casing should be strapped with steel wire or belt. The protection ring should be screwed on the exposed part of the thread of each casing pipe and its coupling to well protect the thread.
