... .Mirror, 3M grinding, Ra0.005, finish14, Precision: temperature difference≤±1°C, thermal deformation≤0.01mm, concentricity≤0.001mm, straightness≤0 ... Roller1. HRC55~58.2. Inner structure.3. Precision: temperature difference <= 1°C, heating transform <= 0.02mm, concentric <= 0.005mm.Teflon ... roller, Ra is up to 0.01, accurancy is 0.001 mm.Heating roller or cooling roller, inner structure, inform ...