Under normal climate, the anti-rust primer should immediately applied within 4 hours after sandblast finished ,otherwise the surface with rusted immediately in few hours.

• 在常规气候条件下，喷砂处理完的钢铁应在4小时内立即用相应防锈底漆涂饰。暴露在空气中的洁净钢铁表面，很快会在表面形成一薄层锈蚀。