The quality of round steel is inspected through various methods. Visual inspection is the first step, checking for surface defects such as cracks, rust, and uneven surfaces. Dimensional inspection measures the diameter, length, and straightness of the round steel to ensure it meets the specified standards. Mechanical property testing includes tensile tests to determine the tensile strength and yield strength, and hardness tests to measure the material's resistance to indentation. Chemical analysis is also carried out to check the chemical composition of the steel, ensuring that the elements are within the required ranges.