Ключевые слова: abstract, alloy, architecture, background, bar, black, build, building, close, closeup, concrete, construct, construction, corrosion, engineering, grey, group, heavy, industrial, industry, iron, line, manufacturing, material, mesh, metal, metallic, new, object, parallel, pattern, pile, pole, raw, rebar, reinforced, reinforcement, rod, round, rust, silver, site, stack, steel, strong, structure, support, texture, up, wire,