Pipeline passivation has very important applications in industrial manufacturing, construction engineering and other fields. In the field of industrial manufacturing, pipeline passivation can increase the service life of pipelines, reduce the equipment failure rate caused by pipeline damage, and reduce production costs. For example, oil and gas pipelines can maintain their service life for decades after passivation treatment, greatly reducing maintenance costs. In the field of construction engineering, pipeline passivation can protect pipelines from water rust corrosion, thereby greatly extending the service life of pipelines and reducing the number and cost of repairs.