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1. common methods of external anti-corrosion of steel pipes
using the cathodic protection method alone is not economical due to the large power consumption. therefore, the combined protection of the anti-corrosion layer and cathodic protection is adopted, and the cathodic protection of centralized treatment on the exposed metal surface at the defects of the anti-corrosion layer is an economical form of protection. "joint protection" is a protection method "mainly based on anti-corrosion layer and supplemented by cathodic protection".
2. anti-corrosion treatment inside the steel pipe
main anti-corrosion measures: anti-corrosion coating and cathodic protection. the anti-corrosion layer mainly plays the role of isolation in metal corrosion control. the exposed metal at the defect and the part covered by the anti-corrosion layer form a localized corrosion cell of the small anode and large cathode, which in turn will accelerate the corrosion rate of the exposed metal. therefore, the effect of using anti-corrosion layer protection alone is not ideal. prepare the tools required for pipeline corrosion and protection, the basic introduction to the external anti-corrosion measures of metal pipelines.
3. external anti-corrosion material of steel pipe
the external anti-corrosion measures of the steel pipe will make the name lock. polyethylene and polypropylene tapes to assess the corrosion status of pipelines and the safety risks of pipeline operation.
4. anti-corrosion treatment of steel pipes
combining a variety of detection methods, a set of proprietary external anti-corrosion coating detection technology can be used to use advanced instruments and technologies without excavation and without affecting the normal operation of the pipeline. conduct comprehensive and systematic inspection of defects, accurately locate damaged points, evaluate pipeline risks, integrity, and operational status, analyze the causes of pipeline corrosion and propose repair suggestions, repair damaged anti-corrosion layers of pipelines promptly, and maintain and repair pipelines with severe local corrosion. to extend steel pipe working life.