The invention relates to a plug base pin, the method for making and a device. The structure comprises a barrel, wherein the section of the barrel is a rectangular seamless-tube which is provided with a wide surface and a narrow surface, the inner of the barrel is hollow, one end of the barrel is an opening, the other end is a closed end. A method for making the above base pin comprises mainly the following technology steps: a. separating a hollow pipe into small segments, b. spinning and closing one end of the pipe utilizing a rotating ram of a machine, thereby the end portion of the pipe is deformed to form a hemispherical closed end under the high temperature which is produced by pressure and high-speed rotating friction, c. calcining and passing the round pipe body to form a rectangular cross section pipe body, d. impact forging and shaping the closed end to form a trapezoid.