
Mirror Polishing
How mirror polishing is done
Mirror polishing of Duplex stainless steel is carried out by our workers in Posidonia's workshop and is a manual operation using tools. It is a mechanical action that allows obtaining a high-quality finish so that the body in question shines with reflected light. It is a precise and very delicate operation if a quality result is desired. Low-speed abrasive amalgams are used to slowly remove scratches and imperfections from the metal, resulting in a smooth surface and the anchor or deck equipment becoming shiny and mirror-like.
In more technical terms, steel with a mirror finish will have an Ra reading of less than 0.2, or average roughness. Roughness (Ra) measures the microscopic peaks and valleys in the surface of the metal: the lower the number of these peaks and valleys, the smoother and more reflective the metal surface will be.
Mirror polishing offers advantages on both aesthetic and functional levels
Posidonia's mirror finish is not only aesthetically pleasing, brilliant and reflective, but also has technical value, as mirror-polished metal behaves differently when exposed to external environmental factors.
A mirror-polished anchor, chain or deck equipment is less susceptible to corrosion compared to rougher surface finishes.
Posidonia certifications
- The polishing can be requested with a precise value of surface roughness expressed in micrometers.
- The treatments are followed by the company and the finishes are the signature of our anchors, chains, and all the towing and mooring equipment we design and produce in Novi Ligure.



















