The steel pipe rust removal machine adopts a multi-stage polishing system with individually adjustable feed rates (0.1-5mm/s), suitable for efficient rust removal of steel pipes of different specifications (diameter 20-500mm). The main unit features a fully enclosed chassis design, with key components using a valve structure for easy maintenance (reducing maintenance time by 30%). It supports customized polishing processes (coarse/fine polishing optional), has strong abrasive compatibility (compatible with 80-400 grit grinding wheels), and can complete combined polishing in one pass, increasing efficiency by 50%. The feed rack uses belt pulley drive, featuring a compact structure and a low failure rate (<1%). The conveyor system is equipped with an electromagnetic speed-regulating motor (speed range 0.5-10m/min) to meet the speed requirements of different production lines.