QGN series steel pipe inner wall sand blasting machine is used for the inner wall anticorrosion treatment line of steel pipe. It is based on the domestic and foreign small-wall steel pipe cleaning technology, and the inner wall cleaning line for steel pipe inner wall anti-corrosion is designed. The blasting treatment can remove dirt, scale, welding slag, etc. from the inner wall of the steel pipe. And can reduce internal surface stress. This can effectively improve the service life of the steel pipe and reduce the internal corrosion of the steel pipe, thereby improving the intrinsic and appearance quality of the steel pipe.