International Science and Technology Journal

The aim of the quality control process for any production process lies in making sure that the deviations in the products will not exceed the permissible limits, and that the process of controlling the quality of the products requires the establishment of a system to monitor all stages of production, starting with a market study and ending with the disposal of the product after use. To control these stages, there are many scientific methods, and statistical methods are among the methods that help to detect deviations early and reduce costs that often lead to increased sales and increased profits. This paper aims to study the reality of production and quality at the hot rolling mill of the Libyan Iron and Steel Company in the city of Misurata by analyzing the production and quality reports for the year 2021. And by analyzing these reports using the Excel program, it was found that there is a percentage of defective production and the affecting defects were identified for the purpose of focusing on them and working To avoid their occurrence in the future as much as possible. The paper concludes with some recommendations, including training technical staff, theoretically and practically, to use statistical methods to monitor production processes, and setting up an information system that provides information on any possible deviations that may occur, in order not to repeat these defects. Keywords: quality control, Libyan Iron and Steel Company, rolling mill, production stages, excel program.