TUSPIPE-LOGO-TIANJIN-UNITED-STEEL-PIPE-CO.,-LTD

API 5CT J55

API-5CT-J55-API-5CT-R95-OCTG

API 5CT J55

The American Petroleum Institute specification API 5CT J55 Pipe is designed for use in the oil and gas industry. API 5CT J55 is a commonly used petroleum casing pipe material. It is produced according to the API 5CT standard and used in a variety of well types, both oil and natural gas. The main purposes of using casing or tubing are to protect the wellbore from collapse and to provide a conduit for well fluids. The casing is placed in the well first, followed by tubing, which is often smaller in diameter and thus can be nested inside the casing. Both casing and tubing must be made from strong materials that can withstand the high pressures and temperatures encountered deep underground. API 5CT J55 meets these requirements and is, therefore, an excellent choice for OCTG (oil country tubular goods) applications. It is typically produced as seamless steel pipe, but can also be procured in welded form. API 5CT J55 has a relatively high yield strength and good fatigue resistance, making it an ideal choice for high-pressure, high-load applications such as petroleum products. Thanks to its versatility and affordability, API 5CT J55 is one of the most popular steel grades used in OCTG applications today.

Why choose tuspipe?

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Since 1998, Tianjin United Steel Pipe Co., Ltd (TUSPIPE) has been committed to supplying high-quality line pipes.

With over 500,000 tons annual production capacity, the company serves various fields and industries, such as oil & gas exploitation and transmission, ship & auto-building, water & electricity, environmental protection, mechanical engineering, infrastructure construction and etc.

TUSPIPE places a premium on product quality and rigorous product quality control. In order to maintain good product quality,  the company has established a Test & Inspection Center since 2004. With a series of state-of-the-art tests and inspection equipment, the test & inspection center is able to perform the tensile tests, hydro tests, impact tests, DWTT, etc.

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The applications of API 5CT J55 casing and tubing

API 5CT J55 casing and tubing are used in a variety of well applications for the petroleum industry. The J55 casing pipe is a relatively common one in oil and gas drilling. Its relatively affordable price point and its ability to protect the well make it a popular choice among well operators. The J55 tubing is similarly well suited for petroleum operations. Its steel makeup gives it greater strength and durability than some of the other options on the market, making it ideal for high-pressure applications. When used together, API 5CT J55 casing and tubing provide an economical and reliable solution for well operators.

Chemical Composition of API 5CT J55

GradeTypeCMnMoCrNi max.Cu max.P max.S max.Si max.
min.max.min.max.min.max.min.max.
J550.030.03

Mechanical Analysis of API 5CT J55

API 5CT Casing Pipe StandardAPI 5CT Casing Pipe TypeAPI 5CT Casing Pipe Tensile Strength
MPa
API 5CT Casing Pipe Yield Strength
MPa
API 5CT Casing Pipe Hardness
Max.
API SPEC 5CTJ55≥517379 ~ 552

API 5CT J55 Casing & Tubing Specifications

- Specification & Size of API 5CT J55 Tubing

DNO. D.WeightW. T.End Processing
Non-upset coupling-threadUpset coupling-threadSteel Grade
inmmlb./ft.lb./ft.inmmH40J55L80N80C90T95P110
2 3/82.3860.340.1674.24PUPNPNPNPNPN
4.64.70.194.83PNUPNUPNUPNUPNUPNUPNU
5.85.950.2546.45PNUPNUPNUPNUPNU
6.60.2957.49PPP
7.357.450.3368.53PUPUPU
2 7/82.88736.46.50.2175.51PNUPNU
7.87.90.2767.01
8.68.70.3087.82PLBPLBPLBEPLB
9.359.450.348.64PLBPLBPLBEPLB
10.50.3929.96PLBPLBPLBPLB
11.50.4411.18PLB 
3 1/23.588.97.70.2165.49PNPNPNPNPNPN
9.29.30.2546.45PNUPNUPNUPNUPNUPNUPNU
10.20.2897.34PNPNPNPNPNPN
12.712.950.3759.52PNUPNUPNUPNUPNU
14.30.4310.92PPP
15.50.47612.09PPP
170.5313.46PPP
441029.50.2265.74PNPNPNPNPNPN
110.2626.65PUPUPUPUPUPU
13.20.338.38PPP
16.10.41510.54PPP
18.90.512.7PPP
22.20.6115.49PPP
4 1/24.511412.612.750.2716.88PNUPNUPNUPNUPNUPNU
15.20.3378.56PPP
170.389.65PPP
18.90.4310.92PPPPLB
21.50.512.7PPPPLB
23.70.5614.22PPPPLB
26.10.6316PPPPLB
P——Plain;N—— Non-upset coupling-thread;U—— Upset coupling-thread; L——Integral

- Specification & Size of API 5CT J55 Casing

DNO. D.WeightW. T. End Machining Form
 Steel Grade
inmmlb/ftkg/minmmH40J55L80N80C90P110
K55T95
4 1/24.500114.39.514.140.2055.21PSPS
10.515.630.2245.69PSB
11.617.260.2506.35PSLBPLBPLBPLBPLB
13.520.090.2907.37PLBPLBPLBPLB
15.122.470.3379.56PLB
55.00012711.517.110.2205.59PS
1319.350.2536.43PSLB
1522.320.2967.52PSLBPLBPLBPLBEPLB
1826.790.3629.19PLBPLBPLBEPLB
21.431.850.43711.1PLBPLBPLBPLB
23.234.530.47812.14PLB
24.135.860.50012.7PLB
5 1/25.500139.71420.830.2446.2PSPS
15.523.070.2756.98PSLB
1725.30.3047.72PSLBPLBPLBPLBEPLB
2029.760.3619.17PLBPLBPLBEPLB
2334.230.41510.54PLBPLBPLBEPLB
26.839.880.50012.7
29.744.20.56214.27
32.648.510.62515.88
35.352.530.68717.45
3856.550.75019.05
40.560.270.81220.62
43.164.140.87522.22
6 5/86.625168.282029.760.2887.32PSPSLB
2435.720.3528.94PSLBPLBPLBPLBEPLB
2841.670.41710.59PLBPLBPLBEPLB
3247.620.47512.06PLBPLBPLBEPLB
77.000177.81725.30.2315.87PS
2029.760.2726.91PSPS
2334.230.3178.05PSLBPLBPLBPLBE
2638.690.3629.19PSLBPLBPLBPLBEPLB
2943.160.40810.36PLBPLBPLBEPLB
3247.620.45311.51PLBPLBPLBEPLB
3552.090.49812.65PLBPLBPLBEPLB
3856.550.54013.72PLBPLBPLBEPLB
42.763.540.62515.88
46.469.050.68717.45
50.174.560.75019.05
53.679.770.81220.62
57.184.970.87522.22
7 5/87.625193.682435.720.3007.62PS
26.439.290.3288.33PSLBPLBPLBPLBEPLB
29.744.20.3759.52PLBPLBPLBEPLB
33.750.150.43010.92PLBPLBPLBEPLB
3958.050.50012.7PLBPLBPLBEPLB
42.863.690.56214.27PLBPLBPLBPLB
45.367.410.59515.11PLBPLBPLBPLB
47.170.090.62515.88PLBPLBPLBPLB
51.276.190.68717.45
55.380.30.75019.05
8 5/88.625219.082435.720.2646.71PS
2841.620.3047.72PS
3247.620.3528.94PSPSLB
3653.570.40010.16PSLBPLBPLBPLBEPLB
4059.530.45011.43PLBPLBPLBEPLB
4465.480.50012.7PLBPLBPLBEPLB
4972.920.55714.15PLBPLBPLBEPLB
9 5/89.625244.4832.348.070.3127.92PS
3653.570.3528.94PSPSLB
4059.530.39510.03PSLBPLBPLBPLBE
43.564.730.43511.05PLBPLBPLBEPLB
4769.940.47211.99PLBPLBPLBEPLB
53.579.620.54513.84PLBPLBPLBEPLB
58.486.910.59515.11PLBPLBPLBPLB
59.488.40.60915.47
64.996.580.67217.07
70.3104.620.73418.64
75.6112.50.79720.24
10 3/410.750273.0532.7548.740.2797.09PS
40.560.270.3508.89PSPSB
15.567.710.40010.16PSB
5175.90.45011.43PSBPSBPSBPSBEPSB
55.582.590.49512.57PSBPSBPSBEPSB
60.790.330.54513.84PSBEPSB
65.797.770.59515.11PSBPSB
73.2108.930.67217.07
79.2117.860.73418.64
85.3126.940.79720.24
11 3/411.750 4262.50.3338.46PS
4769.940.37520.24
5480.360.4358.46
6089.290.4899.53
6596.730.53411.05
71105.660.58214.42
13 3/813.375339.734871.430.3308.38PS
54.581.10.3809.65PSB
6190.780.43010.92PSB
68101.190.48012.19PSBPSBPSBPSBPSB
72107.150.51413.06PSBPSBPSBPSB
1616.000406.46596.730.3759.53PS
75111.610.43811.13PSB
84125.010.49512.57PSB
109162.210.65616.66PPPP
18 5/818.625473.0887.5130.210.43511.05PSPSB
2020.00050894139.890.43811.13PSLPSLB
106.5158.490.50012.7PSLB
133197.930.63516.13PSLB
P——Plain;S——Short-thread;L——Long-thread;B——Buttress thread;E——Extreme thread

Test and inspection of API 5ct j55 pipes

- Hydrostatic Test

Hydrostatic testing is a necessary step in the pipeline production process. It is used to test the water-tightness of weld seams and the pipe body itself. The test is conducted by filling the pipe with water and applying pressure. If there are any leaks, they will be revealed by this process. Hydrostatic testing is an important quality control measure that helps to ensure the safety and integrity of pipelines.

- Bend Test

The bend test is a critical quality assurance test for welded metal pipes. The test involves taking a sample of the pipe and applying a systematic force to it until it fractures. This helps to ensure that the pipe can withstand the stress of being bent without cracking. The results of the bend test can also be used to assess the quality of the welds, as well as the overall strength of the metal. As such, it is an important test for any company that manufactures or uses welded pipes.

- Flattening Test

The flattening test is a quality control test used in the manufacture of pipelines. The test is performed to determine the resistance of the pipe material to longitudinal and circumferential cracking, as well as to assess the deformation characteristics of the pipe under stress. The flatting test is an important indicator of the overall quality of the pipe and its ability to withstand stresses during operation. The results of the test can be used to adjust the manufacturing process to ensure that the pipes produced to meet the required standards.

- CVN Impact Test

In order to ensure the mechanical properties of pipeline steels, an impact test is usually performed. The test is conducted by freezing a sample of the steel to an extreme tempureture under 0℃ (32℉). The tempureture at which the sample breaks is then used to determine the steel’s impact strength. There are three main areas that are tested: the pipe body, the weld seam, and the heat-affected zone. By testing all three areas, manufacturers can be sure that their pipelines will be able to withstand whatever conditions they may encounter.

- DWTT

In the production of pipelines, DWTT is an impact test that is used to determine the strength of the pipeline material. It is usually performed on large diameter pipelines, and the results are used to determine the impact strength of the material. The impact strength of the material is important for determining the impact resistance of the pipeline. DWTT is performed by impact testing the material with a weight that is dropped from a height onto the pipeline material. The impact strength of the material is determined by measuring the amount of deformation that occurs during the impact. DWTT is an important test for pipeline production because it helps to ensure that the pipeline material can withstand the impact of being dropped from a height.

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