lifting sub

Features & Benefits
Lifting sub is a special above ground tool for lifting drilling tools in oil and gas industry and geologic exploration
. It resembles a pup joint, and is used to thread the upper connection of the drill string to make the drill string 
can be tripped in/out by elevator. As a short type drillstring component, a lifting sub looks like a completion 
tubing and it allows the secure and efficient handling tools that need the help of the drill pipe elevators.