Washing frequency by different environment:
To preserve the original condition of cleanliness and refinement of stainless steel, periodical washing and maintenance is required. Environment | Pastoral area | Urban, industrial, coastal area | Part | Structure | Normal environment | Corrosive environment | Exposed to rainwater | No sediment/contamination remain | 1-2 per year | 2-3 per year | 3-4 per year | Sediment/contamination remain | 2-3 per year | 3-4 per year | 4-5 per year | Indoor | No sediment/contamination remain | 1-2 per year | 3-4 per year | 4-5 per year | Sediment/contamination remain | 2-3 per year | 4-5 per year | 5-6 per year |
Washing method by surface condition:
·Notice:
During washing, to protect stainless steel from scratch, don’t use detergent with decolourant or abrasive, or metal scrubbing brush. After washing, detergent should be rinsed out with clean water. Surface condition | Washing method | Dust, filthy to be removed easily | Wash in warm water with soap or moderate detergent | Label, protective film | Wash in warm water, moderate detergent and organic solvent for adhesive | Grease, fat, oil | Clean with soft paper or fabric, and then wash with neutral detergent or ammonia | Decolourant or various acid attached | Wash in water at once, and then dip in ammonia or sodium bicarbonate, finally wash with warm water or neutral detergent. | Carbonized organic material attached | Dip in hot water of neutral detergent or ammonia, then wash with detergent containing weak abrasive | Finger print | Clean with soft fabric with alcohol, (benzene or ether), then wash in water. | Rainbow grain | Caused by overuse of detergent or oil. Please wash in warm water with neutral detergent. | Faded area by welding heat | Wash with 10% Nitric acid or hydrofluoric acid, then wash with ammonia or sodium bicarbonate water. | Rust by contaminant | Use nitric acid of 10% or detergent containing abrasive. |
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