دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a knot used primarily in lifting heavy equipment with the catline, since it can be readily tied and untied regardless of the weight of the load on it.

n: kinking when lifting heavy object with cathead line.

n: The hook installed at one end of cathead line. Used for lifting drill tool or equipment to drill floor.

n: The hoist cable for lifting heavy object or drill tool to drill floor by cathead through a pulley at the top of derrick mask.

n: The worker who pulls the cathead line.

n: mainly used as cathead line,refer tocathead line

n: A long cathead line used in screwing on and screwing off pipe.