10 November 2021

Certificate of Conformance (COC)

A document in which the manufacturer certifies that the assembly or part is in conformance to the mentioned standard(s), specifications, and guidelines in accordance with the […]
18 July 2017

Chain drive

A mechanical drive using a driving chain and chain gears to transmit power. Power transmissions use a roller chain, in which each link is made of […]
18 July 2017

Chain tongs

A tool consisting of a handle and releasable chain used for turning pipe or fittings of a diam larger than that which a pipe wrench would […]
18 July 2017

Changing rams

Rams are the flexible elements which accomplish the sealing effect of the blowout preventer. It is necessary to change the rams when drill pipe of a […]