Rust-preventive oil: This is a temporary protection method. It works by applying an oil film to isolate the steel from air and moisture, primarily preventing rust during transportation and short-term storage. It needs to be cleaned upon arrival and does not alter the steel itself.
Anti-corrosion coating (paint/coating): This provides permanent or long-term protection. It forms a strong coating (such as epoxy zinc-rich paint or polyurethane topcoat) through sandblasting, brushing, or spraying, providing weather resistance, salt spray resistance, etc., and is the primary means of corrosion protection for engineering structures.
The two have different uses and cannot be substituted for each other.

Time：22/07/2026 11:25:37

Answers

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