Ключевые слова:
Photographic images, Test equipment, Pipes, Gamma-ray apparatus, Grades (quality), Gamma-radiation, Radiography, Non-destructive testing, Safety measures, X-ray apparatus, Welded joints, Radiographic film, Boilers, Optical density, Thickness, Specimen preparation, Pressure vessels, Radiographic testing, Wires, Intensifying screens, Fusion welding, X-rays