2B: After cold rolling, the strip is annealed, pickled and skin-passed, giving a uniform matte surface. It is the most commonly used grade and is suitable for general deep drawing, kitchenware and industrial parts. BA: Bright annealing under a protective atmosphere produces a bright surface with uniform reflectivity, suitable for appliance panels, decorative applications and subsequent coating. No.4: Abrasive brushing creates short, straight lines; suitable for elevators, architectural decoration and kitchen countertops. The grain direction and roughness must be agreed. Acceptance recommendations: 1) Specify the standard (e.g. ASTM A480 / EN 10051) and the finish designation; 2) agree on the roughness Ra and gloss range; 3) agree on permitted defects (scratches, roll marks, color difference, oxidation tint) and the limits for grinding repair; 4) for BA surfaces, pay particular attention to the protective film and transport scratches.