The article discusses the protective properties and possibilities of possibilities of using the most common protective coatings for steel pipelines. An analysis of the most common causes of damage to the anti-corrosion coating and an assessment of the magnitude of the impact on the protective coatings of pipelines was carried out. The required strength characteristics of protective coatings, which are capable of providing sufficiently effective protection of the anti-corrosion coating of a pipeline under various installation conditions, have been analyzed. The possibility of a mechanical impact on the pipe, for example, by the working parts of earth-moving equipment, construction or agricultural machinery during land-based laying of pipelines, as well as anchors or trawls during offshore laying conditions, was considered as an unauthorized impact. Basically, these damages reduce the service life of the object, but sometimes lead to an emergency. Estimated strength characteristics for various types of protective coatings for pipelines are given. The lack of a unified methodology for testing protective coatings of pipelines has caused the need to create specialized test benches, and the calculation of strength and deformation for mechanical impact is carried out in accordance with the requirements established in the standards and specifications for products, according to the calculation method developed for a specific product and agreed with the customer. The designs of test benches used and options for impact strikers for carrying out such tests are presented, simulating various loads, including shock loads on the pipeline. The conditions for the construction of pipelines are analyzed, which must be taken into account when assessing the compliance of the tests with simulated impacts on the protective coating of the pipeline. It is noted that the modeling of an impact on the protective coating of a pipeline must meet the requirements for the resistance of protective coatings, and the impact forces on protective coatings during standard and prequalification tests should not exceed the strength characteristics of the conductive pipe used, since the purpose of the test is to determine the possibility of protective coatings, and not the strength characteristics of the steel pipe used.
