The first layer of casing run into the well structure is called theconductor casing. Its function is to maintain the surface layer near the wellhead.

OCTG casing pipe is a special oil pipe that has been used for a long time. The oil casing string is an integral structure of the oil well, which plays the role of strengthening the wellbore, protecting the wellbore and ensuring normal drilling.

Carbon steel casing is a steel pipe used in oil wells to establish a pressure-resistant sealing zone from the oil and gas reservoir to the surface.

SSAW (Spiral Submerged Arc Welded)pipe pile is a steel pipe pile made by spiral submerged arc welding. SSAW steel tube refers to a strip steel coil that has been rolled into a spiral after surface pretreatment (degreasing, cleaning, chemical treatment) .

LSAW (Longitudinal Submerged Arc Welded) steel pipe pile is a type of structural pipe commonly used in construction and infrastructure projects, particularly in foundation and piling applications.

Pipe sleeves and casing pipe are both components of tubing. Tubing is a pipe connector used to connect and secure pipes or fittings. It consists of inner casing, middle casing and outer casing.