The application of statistical quality control in industries (case study of Obai plastic Nigeria Ltd, Enugu). For any organization to achieve its objectives of profit maximization, it is required that its products must be of high quality, so as to satisfy its customers and be able to compete with any other products in the market. To obtain quality products, therefore, some control measures such as quality control methods are needed in the production process of any organization. This research work centers on the application of statistical quality control in plastic production to ensure that the quality of plastic produced does not deviate from the set standards. Data was collected on weight of plastics produced from proper recorded information, by the means of secondary method of data collection. Analysis was carried out by mean chart and range chart. The charts were simultaneously used in the analysis to investigate process average weight and individual variability. It is observed that the process is under control since the weight of the plastics falls within the specification limits.