API 5CT Q125 Casing Tubing

API 5CT Q125 Oil And Gas Casing Pipes suppliers, Exporters of API 5CT Gr. Q125 Oilfield Casing Pipes.

Buy API 5CT Gr. Q125 Casing Pipes at affordable price, Wide stock of API 5CT Grade Q125 Oil Well Drilling Casing Pipe.

API 5CT Q125 Steel Casing Pipe

API 5CT Q125 Steel Casing Pipe

API 5CT Q125 Welded Pipe

API 5CT Q125 Welded Pipe

API 5CT Q125 Seamless Pipe

API 5CT Q125 Seamless Pipe

Tubos India is one of the large manufacturers for high quality API 5CT Q125 Casing Pipes. API 5CT Q125 Casing Tubing used for transport both crude oil and natural gas from oil and gas layer to the surface pipeline after drilling is completed. It has the ablility to bear the pressure produced by the exploitation process. Our oilfield tubing & API 5CT Grade Q125 Casing Pipe can be widely applicable to construction, petroleum, smelting, shipbuilding, aviation, food, electric power, paper, medical equipment, chemical industry, boilers, heat exchangers, metallurgy.

Q125 Casing is placed downhole to provide structural integrity to the wellbore and must withstand external collapse pressure from rock formation and internal yield pressure from gases and fluids. It also must hold its own deadweight and withstand the transaxial pressure and torque placed on it while running downhole.

Q125 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 Sizes4 1/2"-20", (114.3-508mm)
Thread TypeButtress thread casing, Long round thread casing, Short round thread casing
FunctionIt 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.
L80N80. 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 Grade Q125 Casing Tubing Steel Color Code

NameJ55K55N80-1N80-QL80-1P110
Casinga bright green bandtwo bright green bandsa bright red banda bright red band + a green banda red band + a brown banda bright white band
Couplingentire green coupling + a white bandentire green couplingentire red couplingentire red coupling + a green bandentire red coupling + a brown bandentire white coupling

ISO/API casing/ API 5CT Q125 Casing specifications

CodeaOuter DiaNominal weight
(with thread and 
coupling) b,c
Wall ThicknessEnd processing type
mmkg/mmmH40J55M65L80N801C90dP110Q125d
InLb/ftK55C95N80QT95d
12345678910111213
4-1-29.5114.314.145.21SSS-----
4-1-210.5114.315.635.69-SBSB-----
4-1-211.6114.317.266.35-SLBLBLBLBLBLB-
4-1-213.5114.320.097.37--LBLBLBLBLB-
4-1-215.1114.322.478.56------LBLB
511.512717.115.59-SS-----
51312719.356.43-SLBSLB-----
51512722.327.52-SLBLBLBLBLBLB-
51812726.799.19--LBLBLBLBLBLB
521.412731.8511.1--LBLBLBLBLBLB
523.212734.5312.14---LBLBLBLBLB
524.112735.8612.7---LBLBLBLBLB
5-1-214139.720.836.2SSS-----
5-1-215.5139.723.076.98-SLBSLB-----
5-1-217139.725.37.72-SLBLBLBLBLBLB-
5-1-220139.729.769.17--LBLBLBLBLB-
5-1-223139.734.2310.54--LBLBLBLBLBLB
6-5-820168.2829.767.32SSLBSLB-----
6-5-824168.2835.728.94-SLBLBLBLBLBLB-
6-5-828168.2841.6710.59--LBLBLBLBLB-
6-5-832168.2847.6212.06---LBLBLBLBLB
717177.825.35.87S-------
720177.829.766.91SSS-----
723177.834.238.05-SLBLBLBLBLB--
726177.838.699.19-SLBLBLBLBLBLB-
729177.843.1610.36--LBLBLBLBLB-
732177.847.6211.51--LBLBLBLBLB-
735177.852.0912.65---LBLBLBLBLB
7-5-824193.6835.727.62S-------
7-5-826.4193.6839.298.33-SLBSLBLBLBLBLB-
7-5-829.7193.6844.29.52--LBLBLBLBLB-
7-5-833.7193.6850.1510.92--LBLBLBLBLB-
7-5-839193.6858.0412.7---LBLBLBLBLB
7-5-842.8193.6863.6914.27---LBLBLBLBLB
7-5-845.3193.6867.4115.11---LBLBLBLBLB
7-5-847.1193.6870.0915.88---LBLBLBLBLB
8-5-824219.0835.726.71-SS-----
8-5-828219.0841.677.72S-S-----
8-5-832219.0847.628.94SSLBSLB-----
8-5-836219.0853.5710.16-SLBSLBLBLBLBLB-
8-5-840219.0859.5311.43--LBLBLBLBLB-
8-5-844219.0865.4812.7---LBLBLBLB
8-5-849219.0872.9214.15---LBLBLBLBLB

CodeaOuter diameterNominal weight 
(with thread 
and coupling) b,c
Wall thicknessEnd processing type
mmkg/mmmH40J55M65L80N80C90dP110Q125d
InLb/ftK55C951, QT95d
12345678910111213
9-5-832.3244.4848.077.92S-------
9-5-836244.4853.578.94SSLBSLB-----
9-5-840244.4859.5310.03-SLBSLBLBLBLB--
9-5-843.5244.4864.7311.05--LBLBLBLBLB-
9-5-847244.4869.9411.99--LBLBLBLBLBLB
9-5-853.5244.4879.6213.84---LBLBLBLBLB
9-5-858.4244.4886.9115.11---LBLBLBLBLB
10-3-432.75273.0548.747.09S-------
10-3-440.5273.0560.278.89SSBSB-----
10-3-445.5273.0567.7110.16-SBSB-----
10-3-451273.0575.911.43-SBSBSBSBSBSB-
10-3-455.5273.0582.5912.57--SBSBSBSBSB-
10-3-460.7273.0590.3313.84-----SBSBSB
10-3-465.7273.0597.7715.11-----SBSBSB
11-3-442298.4562.58.46S-------
11-3-447298.4569.949.53-SBSB-----
11-3-454298.4580.3611.05-SBSB-----
11-3-460298.4589.2912.42-SBSBSBSBSBSBSB
13-3-848339.7271.438.38S-------
13-3-854.5339.7281.19.65-SBSB-----
13-3-861339.7290.7810.92-SBSB-----
13-3-868339.72101.1912.19-SBSBSBSBSBSB-
13-3-872339.72107.1513.06---SBSBSBSBSB
1665406.496.739.53S-------
1675406.4111.6111.13-SBSB-----
1684406.4125.0112.57-SBSB-----
18-5-887.5473.08130.2111.05SSBSB-----
2094508139.8911.13SLSLBSLB-----
20106.5508158.4912.7-SLBSLB-----
20133508197.9316.13-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. Q125 Tubing Chemical Composition

CMnMoCrNiCuTiPSSiVAl
Min------------
Max0.3501.3500.8501.5000.990--0.0200.010---

API 5CT Q125 Tubing Mechanical Properties

Tensile Strength931 MPa min135,000 psi min
Yield Strength862 MPa min1,034 MPa max
125,000 psi min150,000 psi max
Total Elongation Under Load0.650 %-
Hardness--

API 5CT Q125 Casing Tubing Tensile & Hardness Requirement

GroupGradeTypeTotal elongation under load %Yield strength MPaTensile strength min. MPaHardness a max.Specified wall thickness mmAllowable hardness variation b HRC
min.max . HRCHBW
1234567891011
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 Q125 Casing Tubing 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%.
  • Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT Q125 Casing coupling.
  • 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.
  • 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 OilField Tubing primarily serves to transfer oil and gases & it's important for oil and gas operators to protect their production well casings from corrosion with cathodic protection.

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