Calibrated steel /ˈkælɪˌbreɪtɪd stil/ – a type of steel that has been hot-rolled and additionally cold-drawn (hardened) and slightly pressed. Materials with low plasticity are heated. The size of the calibrated similar profile is more precise, the surface is smooth, and the mechanical properties are much higher; usually, the section is circular, sometimes square, hexagonal, etc. in the form Length 6-15 m.