API standard oil casing pipe

API 5CT Oil Casing Pipe For Cementing Well Description: Oil casing pipe is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or wellbore, 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.Type of casing used:Surface casing& Intermediate casing& Production casing (oil string). Size of casing