Inner wall derusting equipment of overlong circular pipes

The utility model discloses inner wall derusting equipment of overlong circular pipes, which is simple in operation and good in derusting effect. The inner wall derusting equipment is composed of a variable speed rotary power head (1), a chuck (2), a workpiece cavity (3) and the like, wherein the variable speed rotary power head (1) is connected with the back end of the chuck (2), the front end of the chuck (2) is closely connected with one end of the workpiece cavity (3), and a rotatable carrier roller (5) is inserted on the side wall of the other end port of the workpiece cavity (3). The inner wall derusting equipment disclosed by the utility model is assembled by a plurality of independent components, and the inner wall derusting equipment disclosed by the utility model can be detached after derusting a bath of circular pipes, part of components can be singly used so as not to generate waste due to the idle equipment, for example, the rotary power head (1) can be used for milling end faces or boring holes;