Casing:

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 well bore 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.

Well Casing serves as well sidewall. Standards and Technical Conditions for Supply:API Spec 5CT ISO13680 Grade: J55, K55, N80-1,N80-Q, L80-1, L80-9Cr,L80-13Cr,C95, P110. Tread types: NUE, EUE, VAM, STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

Oil Casing Pipe: Casings are used for fixing the well wall or down hole, which have wide diameters, can be divided into conductor casings, technical casings and Oil casings.

Uses: Well Casing serves as well sidewall.

Standards and Technical Conditions for Supply:API Spec 5CT

Grade of pipe casing: J55, K55, N80-1,N80-Q, L80-1, L80-9Cr,L80-13Cr,C95, P110.

Tread types of pipe casing : STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

Dimension: OD: 114.3-508mm WT: 5.21-16.13mm

Tubing：

Process: ERW and Seamless

Standard: API 5CT

Certificate: Tubing: LTC, STC, BTC, VAM.Tubing: NUE, EUE.

Out Diameter: Casing: OD 4 1/2"- 20" (114.3mm-508mm)

Tubing: OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)

Wall Thickness: 0. 205"- 0.635"

Length: R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr or longer)

Steel Grade: H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, Q-125

Surface: Corrosion proofing water based paint

End: Beveled, Square cut. And pipe protection cap especially for casing and tubing.

Heat treatment: Normalized, Quencher+Temper

Tubing: 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.