(57) A pair of rolls (11, 12) displaceable axially in accordance with the rolled sheet
width are arranged at the upper and/or lower sides of a pair of work rolls (2,3) having
a high flexural rigidity, such that the axes of the axially displaceable rolls (11,
12) an substantially in the same plane as the axes of the work rolls (2, 3), so that
the shape control of the rolled sheet (1) is performed by the axial adjustment of
the axially displaceable rolls (11, 12). Each axially displaceable roll (11, 12) has
an axial and portion the diameter of which is gradually decreased toward the axial
outer extremity with such a rate that the reduction in radius of said axial and portion
within the range of 100 mm is at least 0,3 mm. Stress concentration at the displaceable
roll (11, 12) end, spalling and scoring are avoided, and the shape controllability
is improved considerably,
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