Method for determining optimal overhaul service of centrifugal and axial pumps Bakhtiyor Uralov, Sobir Eshev, G. Khakimova, Sh. Mutalov, I. Raimova, D. Arzieva and Mirsoxibjon Salimbayev E3S Web of Conf., 401 (2023) 01052 Published online: 11 July 2023 DOI: 10.1051/e3sconf/202340101052