Fully continuous headless rolling is adopted, the rolling is uniform, the loss of the strip head and tail is low, and the yield rate is high. Two uncoilers are installed at the entrance of the unit, and the flash welder and the entrance looper are configured. Compared with the single coil rolling operation, a large number of auxiliary time and operation accidents are reduced. The unit is equipped with a double coiler and a flying shear to further increase the output of the unit . Equipped with a shape meter online, the device can realize the segment shape measurement of the shape and intuitively display the shape of the shape, which is convenient for the analysis and improvement of the shape of the plate, realize the data characterization of the shape of the plate, and has the strength of bearing and rolling raw materials. 500MPa capacity.