304 stainless steel plate polished surface treatment

No.3: Indicated by 3A and 3B. 3A: The surface is evenly ground, and the abrasive grain size is 80~100. 3B: Wool surface polishing, the surface has uniform straight lines, usually polished once with a sanding belt with a size of 180~200 on a 2A or 2B plate.
No.4: One-way surface treatment, the reflectivity is not strong, this surface treatment may be the most widely used in architectural applications. The process is first polished with a coarse abrasive and then ground with a grit size of 180.
No.6: A further improvement of No.4 is to polish the No.4 surface in an abrasive and oily medium using a Tampico polishing brush. This surface treatment is not included in the British Standard 1449, but can be found in the American Standard.
No.7: Known as bright polishing, it is a polishing of a surface that has been worn but is still worn. Usually a 2A or 2B plate is used with a fiber or cloth polishing wheel and the corresponding polishing paste.
No.8: The mirror-polished surface with high reflectivity is often called a mirror finish because it can reflect a clear image. Stainless steel is polished in succession with fine abrasives and then polished with an extremely fine polishing paste. It should be noted that in architectural applications, such surfaces will retain fingerprints when used in areas with high foot traffic or where people frequently touch them. Fingerprints can be removed, but sometimes they are beautiful.

The polished 304 stainless steel plate supplied by GNEE has a smooth and flawless surface, with significantly improved gloss and a mirror effect. This smooth surface not only enhances visual appeal, but also reduces dirt accumulation, making cleaning easier‌.
In addition, polishing treatment can also improve the corrosion resistance of stainless steel plates to a certain extent, especially in highly corrosive environments, where further passivation treatment is required to provide better protection.