swivel pipe connector
1injection head — A swivel head connector through which drilling fluid is injected into the drill pipe [16] …
2Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… …
3Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
4Swaging — (  /ˈsweɪ …
