Ключевые слова: background, bearing, bolt, bolts, bridge, close, closeup, connection, construction, corroded, corrosion, detail, dots, durable, engineering, eroded, failure, fortify, girder, grey, heavy, indoors, industry, iron, isolated, large, load, metal, methods, nail, new, nobody, paint, plate, principles, repairing, rivet, row, rust, screw, shiny, stability, stack, steel, strength, strong, structure, studio, support, washer,