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Roughness / straightness of bar steel

Roughness
ground, polished
Rmax. ≤ 5 μm/Rz ≤ 3 μm/Ra ≤ 0.5 μm
Rmax. ≤ 2.5 μm/Rz ≤ 2 μm/Ra ≤ 0.3 μm
Straightness
up to 0.5 mm/1 m as standard
up to 0.2 mm/1 m with additional work
even better straightness on request