Steel bars are painted, not stainless.
In case of damage to the paint (e.g. falling, impact, or normal wear), it may lead to exposure of the steel and the formation of surface corrosion.
Corrosion is a natural characteristic of steel and is not a manufacturing defect.
It does not affect the functionality and strength of the bars if the paint is not significantly damaged.
Customer recommendations:
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continuously check damaged areas,
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if metal is exposed, the area can be repainted or treated with a protective spray,
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avoid prolonged storage in humidity.