Ключевые слова: abstract, architecture, background, bar, base, building, bundle, closeup, concrete, construct, construction, corrosion, craft, factory, ferro, foundation, group, industrial, industry, iron, line, material, metal, metallic, new, old, pattern, pile, pole, rail, raw, rebar, reinforce, reinforced, reinforcing, rigid, rod, rust, silver, site, steel, strong, structure, texture, used,