25/05/2026
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These 200 PFC sections were recently rolled TOE OUT to some tight inside radii, 800mm and 500mm.
The tighter a section is curved, the harder it becomes to maintain the original shape of the steel. The 800mm I/Rad came up well, with 6mm concave through the web. The 500mm I/Rad pushed the material much further, resulting in over 10mm concave.
Thatβs the reality of cold rolling at extreme radii, every section has a limit where deformation becomes unavoidable.
Not every project requires a perfect cosmetic finish, particularly when the steel is structural and hidden from view. But understanding these limitations helps us work with customers to achieve the best possible outcome for both function and appearance.
