In scaffolding a sleeve coupler is a coupler used to join two tubes end to end, and which grips the outside of the tubes as opposed to a joint pin which grips the internal surfaces of the tubes to be joined. Found on http://www.probertencyclopaedia.com/browse/TS.HTM
In scaffolding a sleeve coupler is a coupler used to join two tubes end to end, and which grips the outside of the tubes as opposed to a joint pin which grips the internal surfaces of the tubes to be joined.