18 July 2017
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
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 […]
18 July 2017
A valve that permits flow in one direction only. If the gas or liquid starts to reverse, the valve automatically closes, preventing reverse movement. Commonly referred […]
18 July 2017
A device with an orifice installed in a line to restrict the flow of fluids. Chokes are also used to control the rate of flow of […]