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

API 5CT N80

TUSPIPE-TUBING-CASING-OCTG-API-5CT-N80

API 5CT N80

API 5CT N80 is a type of steel pipe that is typically used in well applications. It is manufactured to the specifications laid out in the API (American Petroleum Institute) standards. The N80 designation means that this pipe has been tested and meets specific mechanical and chemical properties requirements. This type of pipe is most often used in casing and tubing applications in the oil and gas industry. It is also known as OCTG (oil country tubular goods). The main difference between N80 and other steel grades is that this pipe has been specifically designed to protect against wellbore environments. As a result, it has higher levels of impact resistance and tensile strength than standard steel pipes.

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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 N80 casing and tubing

According to the American Petroleum Institute, API 5CT N80 casing and tubing are primarily used in well drilling operations to protect the wellbore. The N80 casing and tubing can be used in a variety of well environments, including high pressure and high temperature wells. In addition, the N80 casing and tubing is well suited for use in horizontal wells. The N80 casing and tubing is also commonly used in offshore drilling operations. The API 5CT N80 casing and tubing is manufactured according to strict quality control standards. As a result, the N80 casing and tubing is highly durable and can provide reliable well protection for many years.

Product Description of API 5CT N80

Product NameAPI 5CT N80
SizeO. D26.67-508mm
W. T2.87-16.13mm
LengthR1(5.49-6.71m),R2(8.23-9.14m),R3(11.58-13.72m)
Type of End Finish1.Plain end
2.Short round thread
3.Long round thread
4.Buttress thread
Surface1.Black Painted
2.With oil
3.Bared or as per customers’ requirement
StandardAPI 5CT
ApplicationTube for conveying gas, water, and oil in both and natural gas industries, etc.

Chemical Composition of API 5CT N80

GroupGradeTypeCMnMoCrNi max.Cu max.P max.S max.Si max.
min.max.min.max.min.max.min.max.
1N8010.030.03
2N80Q0.030.03

Mechanical Analysis of API 5CT N80

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 5CT1/Q≥689552 ~ 758

API 5CT N80 Casing and Tubing Specifications

- Specification & Size of API 5CT N80 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 N80 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
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