<p>With the increase in the demand for long-lasting anti-corrosion technology for pipelines in oil and gas storage and transport projects, the research on the external anti-corrosion layer and internal coating technology of pipelines has received wide attention. For the natural gas pipeline anticorrosion coating materials in the pipeline corrosion research status quo, the preparation of dibasic acid as chain extender epoxy acrylate modified material coating materials, the study of its anti-corrosion effect on the chemical pipeline, examined the resin acid value, epoxy acrylate structure, water contact angle, water absorption, electrochemical impedance, salt spray resistance, dynamic mechanical heat, light curing coatings, and other basic properties. four dibasic acid epoxy The chemical impedance and salt spray resistance test results of the coating materials of the acrylate-modified material resins show that the corrosion resistance of the coating materials exhibits the change rule of gradual enhancement first and then gradual decrease with the increase of the carbon chain. At the same time, the article studied the feasible economic benefit evaluation method of the construction project of interconnected long-distance natural gas pipeline project, and the results showed that: the financial internal rate of return of the interconnected pipeline project under the three functions of gas supply, transferring and security are 10.61%, 11.87% and 1.69% respectively; the project financial internal rate of return for the overall function of the project is 6.49%, which is higher than the benchmark rate of return of 6%. The project as a whole is financially viable.</p>