There are several testing methods for steel angles, including visual inspection, dimensional measurement, hardness testing, chemical analysis, and mechanical testing. Visual inspection involves examining the angles for any visual defects or irregularities. Dimensional measurement ensures that the angles meet the specified size and shape requirements. Hardness testing determines the hardness of the steel, which is an important factor in its strength and durability. Chemical analysis is performed to check the composition and purity of the steel, ensuring that it meets the required standards. Mechanical testing involves subjecting the steel angles to various loads and stresses to evaluate their mechanical properties such as strength and ductility.