NO.2D silver-white heat treatment and pickling after cold rolling, sometimes a matte surface processing of the final light rolling on the mat roll. 2D products are used for applications with less stringent surface requirements, general materials, deep drawing materials. The gloss of NO.2B is stronger than that of NO.2D. After NO.2D treatment, it is subjected to a final light cold rolling through a polishing roller to obtain a proper gloss. This is the most commonly used surface finishing, which can also be used as the first step of polishing. General materials. BA is as bright as a mirror. There is no standard, but it is usually a bright annealed surface processing with high surface reflectivity. Building materials, kitchen utensils. NO.3 Coarse grinding: Use 100~200# (unit) grinding belts to grind NO.2D and NO.2B materials. Building materials and kitchen utensils. NO.4 Intermediate grinding is a polished surface obtained by grinding No.2D and No.2B materials with 150~180# stone abrasive belts. This is universal, with specular reflection and visible “grain” light. Same as above. NO.240 fine grinding The NO.2D and NO.2B materials are ground with 240# cementitious grinding belt. Kitchen utensils. NO.320 ultra-fine grinding The NO.2D and NO.2B materials are ground with 320# cementitious grinding belt. Same as above. The gloss of NO.400 is close to that of BA. Use 400# polishing wheel to grind the NO.2B material. General materials, construction materials and kitchen utensils. HL Hairline grinding: Grinding the hairline with the appropriate particle size abrasive material (150~240#) has many grains. Buildings and construction materials. NO.7 is close to mirror polishing, use 600# rotary polishing wheel for polishing, art use, decoration use. NO.8 Mirror polishing, polishing wheel for mirror polishing, mirror, decoration.