Abstract: In a continuous casting installation, a casing wherein a primary roller apron section is mounted for guiding the cast metal strand is mounted on a framework for displacement in a direction transverse to the axis along which molten metal is cast from an ingot mold to form the strand. A curvilinear secondary roller apron section is axially aligned with the primary apron section and includes a support for the rollers of this section for further guiding the cast metal strand. The two sections are coupled together between an upper part of the secondary apron section support and an element of the casing in such a manner as to provide self-alignment of the two apron sections upon a relative displacement between the casing and the secondary roller apron section.