The utility model provides a but female terminating set of plug -in pipe, including setting up the terminal ball body on tub female installing port, set up the pipe be used for on female installing port with terminal ball body matched with fixed establishment sets up the sealing module of the female installing port inside wall of pipe sets up be used for dry mechanism in the ball body of terminal,synergism through above -mentioned structure for this installs not only convenient to detach, but also can carry on anticorrosively and be dampproofing inside, and can place the tip at tubular busbarwith this device fast.