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  • ADD: Hunan Steel Industrial Zone,Tianxin Special District, Changsha City.

Products - Casing & Tubing

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.
API 5CT PSL-1, PSL-2H-40, J-55, K-55, L-80, N-80, C-90, C-95, T-95, P-110, Q-125
For Standard and High Collapse Applications
Specifications: API 5CT
Weld Alternatives: ERW and Seamless
OD Size Range: 114.3mm-508mm (4 1/2"-20")
Weight Range: 9.5#/FT -169#/FT
Lengths: R1 (4.88mtr-7.62mtr)
R2 (7.62mtr-10.36mtr)
R3 (10.36mtr-14.63mtr)
Surface Finishes: Bare or regular Mill Coating.
End Finishes: Plain End, BTC, STC, LTC, Buttress Thread, Premium Connection
Heat Treatment: Normalized, Quencher+Temper

Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes.
API 5CT H-40, J-55, L-80, N-80 Type1, N-80Q, C-90, T-95, P110
Weld Alternatives: ERW and Seamless
OD Size Range: 60.3mm-114.3mm (2 3/8"-4 1/2")
Non- Upset T&C Weight Range: 1.14#/FT -26.10#/FT
External Upset Weight Range: 1.20#/FT -12.75#/FT
Lengths: R1 (4.88mtr-7.62mtr)
R2 (7.62mtr-10.36mtr)
Surface Finish: Bare or Regular Mill Coating
End Finishes: NUE T&C, EUE T&C,
Heat Treatment: Normalized, Quencher+Temper
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