Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or wellbore. 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.
Standard: API spec 5ct, ISO9001:2000
Grade: H40 , J55, k55, n80, L80 , T95 , P110
Usage: Oil and gas field
Thread type: Btc, ltc, stc
Application: Casing serves as walls of a well
O. D. 4-1/2”--13-3/8”(114.3mm--339.7mm)
LENGTH RANGE : R1, R2, R3
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