Steel stricture shall be tested for strength & hardness b sure that the critical area (welding, wear etc.) are free from any defect that eliminate the service life and failures in the structure.
NDT allows for the evaluation for quality of materials used in fabrication of steel structures by a various of NDT Conventional and Advanced methods including but not limit to:
MT (Magnetic Particle inspection) that detects surface and near surface flaws in ferromagnetic material and an effective method for determining defects such as cracks, pores, cold lap, lack of sidewall fusion in structure.
UT (Ultrasonic Test) Ultrasonic waves are transmitted through the material to detect internal flaws of the material.
Also ultrasonic thickness gauging helps inspect the thickness of structural steel to measure the metal loss by corrosion, erosion, damage etc.
PT (Liquid penetrant inspection) that detects surface-breaking defects material flaws on the surface of structural steel / non-metallic materials and non-porous materials.
Hardness Testing including Rockwell, Brinell and Vickers test etc.