| abstract |
(57) [Problem] To provide a hot-rolled steel sheet for manufacturing an ultra-thin steel sheet for cans having a uniform material and thickness in the width direction of the sheet, despite being extremely thin and wide. A slab is made into a sheet bar by rough rolling, which is butt-joined to a preceding sheet bar, and the width end of the sheet bar is heated by an edge heater. Finish continuous rolling is performed by rolling to obtain a hot-rolled steel strip having a sheet width of 950 mm or more, a sheet thickness of 2 mm or less, and a crown of ± 40 μm or less. |