ANALYSIS OF THE PROPERTIES OF COATINGS USED TO PROTECT THE INNER SURFACE OF PIPELINES

The paper considers the main properties of protective coatings applied to the inner surface of pipes and pipe products. The main factors affecting the durability of coatings during the operation of pipelines are indicated, groups of test media and test parameters for the gradation of coatings to different operating conditions are identified. The influence of various aggressive media on pipeline coatings is described, as well as test media and test parameters of protective coatings are considered. The main methods for determining the physical and mechanical characteristics of coatings are given, brief informational and descriptive references for each of them are given. Recommendations are given for testing the protective coatings of the inner surface of pipes for compliance with technical requirements, which, ultimately, will allow the selection of materials most resistant to aggressive field environments.