Abstract: In response to the many problems of environmental protection failure, unstable pickling quality, excessive acid consumption and low automation in traditional steel pipe pickling production lines, new dentate disc steel pipe pickling production line with high efficiency, environmental protection and high automation are designed and developed. The production line adopts a modular design concept. By optimizing the pickling process, developing automation equipment, and introducing advanced environmental protection technologies, it can realize the pickling of steel pipes or profiles of different specifications and materials, and realize the automation, efficiency and greening of the pickling process. The production line has little investment, simple operation, low risk, high economic and environmental benefits, and high market promotion value.