Quality / Finish
Uniform matte appearance, free from impurities as a result of a chemically cleaned surface.
Pickled surfaces exhibit increased emissivity. This means, for instance, that lower heating temperatures can be achieved in high-temperature applications while maintaining the same radiant power.
Furthermore, the pickled surface should be preferred for all standard applications in which a bright finish is not absolutely necessary. It is the least expensive variant.
The appearance of ground sheets falls between that of bright and pickled sheets. They have a satin-like finish. The ground surface is a less expensive alternative to the bright surface and is suitable for all standard applications.
It is possible to work to very narrow tolerances with rods that have a ground surface.
The mirror finish is visually appealing and exhibits a high level of reflectivity that can be of interest for certain applications (e.g. reflectors).
The marks of forging can still be seen. Matte appearance as a result of chemical cleaning.
Least expensive surface finish: Can be used, for instance, in the glass industry with the benefits of reduced wear compared with machined surfaces.
Turned, uniform surface with a matte appearance. A measurable surface roughness and tolerances in the range of tenths of a millimeter are achieved.
Bright appearance. More material removed, resulting in reduced roughness; free from any impurities.