API 5CT K55/J55 SC steel oil casing and tubing
November 25, 2017
SMLS Seamless Hollow Section for constructions
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API 5CT J55 STC BTC LTC oil casing pipe

API 5CT J55 Casing Tubing is a API 5CT Oil Casing Pipe & mainly used for oil well drilling. We manufacture API 5CT J55 Casing Tubing in accordance with the SY/T6194-96 standard, it is available as short thread type and long thread type supplied with their couplings.Casing pipe section shape is round, in big diameter pipe and put it into the oil well, fixed by the cement, to protect other equipment which mostly made of iron and steel. Oil well shall be designed to bear the different strength of external power, as crush, explode, stress and chemical corruption. During the well drilling process, put casing into the well bore, it will stabilize the well bore perfectly.

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 J55 Casing Tubing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option.

Our company is a specialized API 5CT J55 Casing Tubing, API casing manufacturer and supplier in India. Trident Steel is highly acclaimed manufacturer & suppliers for pipes and Tubes of carbon steel, alloy steel and API Steel. Our specialised products of pipe series are SSAW, LSAW, ERW, SMLS steel pipes and casing tubing with standard of GB, ASTM, API 5L, DIN, JIS etc.

Standard: API 5CT
Grades: J55/K55, N80-1, N80Q, C90, T95, P110, Q125 and 13Cr Casing
Range of Sizes: 5 1/2” to 20”
Length: R2, R3
Ends Type: BTC (Buttress Thread Coupling), LTC (Long Buttress Thread Coupling), Premium connection.
Premium connections that replace VAM connections, VAM TOP, VAM FJL; Tenaris connetions TenarisHydril CS, TSH W511 and Blue Series, Wedge Series 500, Legacy Series; Hunting Connections like Seal-Lock-Flush (SLX), Seal-Lock Semi Flush (SLSF) etc premium connections.

Chemical Composition(%) of API 5CT
API 5CT J550.34-0.390.20-0.351.25-1.500.0200.0150.150.200.20//0.020
API 5CT  K550.34-0.390.20-0.351.25-1.500.0200.0150.150.200.20//0.020
API 5CT N800.34-0.380.20-0.351.45-1.700.0200.0150.15///0.11-0.160.020
API 5CT  L800.15-
API 5CT J P1100.26-0350.17-0.370.40-0.700.0200.0100.80-
Mechanical Properties of API 5CT
Steel GradeYield Strength (Mpa)Tensile Strength (Mpa)
API 5CT J55379-552≥517
API 5CT K55≥655≥517
API 5CT N80552-758≥689
API 5CT L80552-655≥655
API 5CT P110758-965≥862


Chinese StandardAmerican StandardGerman Standard
20#ASTM A106-BSt45-8DIN17175
ASTM A53-BSt42-2DIN1626
ASTM 178-CSt45-4DIN1629/4
45#ASTM A 1045CK45


API 5CT casing pipe Application

API 5CT casing pipe is used to support the oil and gas pipe wall, and to ensure the drilling process and the post-completion wells normal operation. Each well depending on the depth of drilling and geological conditions, to use several layers of casing. After cementing casing to be used to go down, it different from tubing, drill pipe and can not be reused, a one-time consumable materials. Therefore, the casing consumption accounts for over 70% of all the oil well pipe. According by usage can be divided into the sleeve pipe, surface casing, casing and production casing.

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