The push-pull pickling line is a non-continuous pickling unit specifically designed for cold-rolled strip steel. Its core functions are to efficiently remove the scale on the surface of the strip steel, adjust the coil weight, and cut off the cracked edges, providing high-quality billets for the subsequent cold-rolling process. Its unique design integrates the dual-power mode of "push" and "pull": during the threading stage, the pinch rolls push the strip steel forward, and after it enters the coiler, it is changed to tension pulling to achieve stable operation throughout the process.