hat
Casing ak tiyo kouti se yon longè kout nan bwat oswa tib kòm akseswa downhole, ak fil andedan ki pèmèt de tiyo oswa yo dwe ansanm. Sou kouple byen espesyal, anndan bor yo nan fè fas a fas yo ap kase oswa awondi.
eng
Casing and tubing coupling is a short length of casing or tubing as downhole accessories, with thread inside that allows two pipes or to be joined. On Special Clearance Couplings,the inside edges of the bearing face shall be broken or rounded.