Circular sandpaper is also sandpaper, a conversion product of sandpaper. Its shape is a perfect circle, with sandpaper rolls coated with fluff or double-sided tape, and then placed on a stamping machine for cutting with a special circular mold. The stamped product is circular sandpaper.
Disc sandpaper can be classified into two types based on its adhesive properties: adhesive backed disc sandpaper and velvet backed disc sandpaper (also known as self-adhesive disc sandpaper and brushed disc sandpaper); The brushed disc sandpaper is divided into non porous brushed disc sandpaper and perforated brushed disc sandpaper. There are also some other classification methods, such as by size. Common ones include 4-inch, 5-inch, 6-inch diameter disc sand, and the available disc sand diameter ranges from 23mm to 235mm. There is also a classification based on the sand surface of circular sand. Common types include white sand surface circular sand, red sand surface circular sand, yellow sand surface circular sand, and rare ones such as blue sand surface circular sand and green sand surface circular sand. There is also a classification based on the raw materials of the disc sandpaper, which can be divided into silicon carbide disc sandpaper and brown corundum disc sandpaper. Silicon carbide disc sandpaper can be further divided into green silicon carbide disc sandpaper and black silicon carbide disc sandpaper. Brown corundum disc sandpaper can be divided into ordinary brown corundum disc sandpaper, calcined brown corundum sandpaper, iridium coated brown corundum disc sandpaper, semi brittle corundum disc sandpaper, and so on.

Circular sandpaper is also sandpaper, a conversion product of sandpaper. Its shape is a perfect circle, with sandpaper rolls coated with fluff or double-sided tape, and then placed on a stamping machine for cutting with a special circular mold. The stamped product is circular sandpaper.