In this article modern methods of repair of metal structures of industrial equipment using composite materials are considered. Special attention is paid to the analysis of cavitation damage occurring in pumping equipment and development of innovative coatings based on polyurethane composite DK-2. Laboratory research on modeling of cavitation impact and determination of optimal composition of composite coating including “Orosil” fillers and abrasive particles were carried out. Experimental data confirmed the effectiveness of the proposed solutions: the modified composite material demonstrates increased wear resistance and resistance to cavitation impact, reducing the degree of wear to 10–30% depending on the concentration of fillers. The softening temperature (Vicat method), mechanical strength and hardness of the coating were tested. It was found that the optimum thickness of the coating layer is 2 mm, providing a balance between strength and flexibility. The results obtained can be recommended for practical application in industry to extend the service life of pumping equipment and reduce operating costs.