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Stainless steel surface treatment

1. Common surface treatment types

Mechanical surface treatment: change the surface texture or finish by physical methods.

2B surface (cold rolling + annealing + pickling). Features: slightly reflective, smooth, general purpose. Used in kitchenware, construction, industrial equipment

BA surface (bright annealing) Features: high brightness, close to mirror surface. Used in high-end decoration, electronic products

No.1 (hot rolling + pickling) Features: rough, grayish white. Used in industrial equipment, structural parts

No.3 (grinding and polishing) Features: short grain frosting, anti-fingerprint. Used in elevators, home appliance panels

No.4 (brushed surface) Features: long grain matte, wear-resistant. Used in architectural decoration, kitchenware

HL (hair grain surface) Features: fine grain, scratch-resistant. Used in door frames, electrical appliance housings

Sandblasting Features: matte, rough texture. Used for industrial equipment and sculptures

2. Surface treatment requirements of different industries

The architectural decoration industry uses No.4 brushed, HL hairline, and PVD coated surfaces, which are beautiful, fingerprint-resistant, and corrosion-resistant

The food and medical industry uses BA mirror and electrolytic polished surfaces, which are easy to clean and sterile

The home appliance industry uses 2B, sandblasting, and powder spraying surfaces, which are scratch-resistant and beautiful

The automotive industry uses passivation and electroplating surfaces, which are corrosion-resistant and wear-resistant

The electronics industry uses BA surfaces and ultra-thin precision belt surfaces, which are high-precision and anti-oxidation