In order to achieve safety and reliability in oil and gas production, the quality standards for oil casing pipes have been developed. These include the processes of material standards, the mechanical properties of the oil casing pipe, diameter accuracy, and even their ability to be corroded. Meeting these standards is important for the operation of the oil casing pipes in an extremely wellbore environment. During fabrication, oil casing pipes undergo quality assurance processes checking if they meet the set standards. Before installation to the oil wells, the pipes go through strict inspection and testing for quality assurance