China’s Leading Custom Sandpaper Manufacturer

20-grit sandpaper primarily used for heavy industrial tasks like initial removal of thick varnish or paint from wood surfaces; 40–60-grit sandpaper is ideal for aggressive material removal, stripping rough surfaces, heavy paint/varnish layers, or opening wood grain for stain/paint adhesion; 60–80-grit sandpaper is suitable for sanding hard metals (e.g., steel) or concrete.; 80–150-grit sandpaper removes minor imperfections, smooths surfaces, and dulls painted surfaces. Commonly used for wood, laminate, and plaster; 120–220-grit sandpaper prepares surfaces for finishes (e.g., creates a “key” for paint/stain adhesion) and sands between coats of paint or varnish; 240–320-grit sandpaper provides final smoothing before applying the last coat of finish. Removes fine scratches left by coarser grits; 600–1000-grit sandpaper starts the polishing process for wood or finishes, ensuring a high-gloss surface; Higher grits (1000+) are used for specialized polishing.