Kaliuzhnyi, A., Kaliuzhnyi, V. and Levchenko, V. 2024. Hole flanging at the bottom of the hollow semi-finished product after deep drawing. Materials working by pressure. 1(53) (Dec. 2024), 80–87. DOI:https://doi.org/10.37142/2076-2151/2024-1(53)80.