This scheme involves a shot blasting machine for the inner wall of an ultra-long pipeline, which includes a sand storage box, a sand conveying bucket with a power motor for throwing a head, a sand conveying box, a rotating throwing head with blades, and a steel sand collecting wing in the pipe. , Power motor of sand return device, steel sand collection wing support device, steel sand collection wing recovery device, steel sand collection auger conveying mechanism, rust removal machine walking wheel, angle adjustable walking wheel support frame, dust removal induced draft fan, fan power motor The rust removal machine is equipped with an adjustable angle walking wheel. Through the rotation of the steel pipe, the straight line walking in the steel pipe can be realized. Through the control of the sand storage box and the automatic sand volume control valve, the inner wall of the steel pipe can be adjusted. In the rust removal operation, the steel grit automatic recovery device at the back end of the rust remover can collect the steel grit in the pipe and return it to the sand storage box to achieve the purpose of recycling the steel grit. , so that the rust removal of the inner wall of the pipeline is efficient, energy-saving and clean.