Ключевые слова: background, bar, beam, beams, bearing, build, building, bunch, business, construction, engineering, frame, girder, group, hard, hardness, heap, heavy, ibeam, industrial, industry, iron, joint, large, line, manufacture, manufacturing, material, metal, metallic, new, objects, pattern, reinforcement, rust, rusty, site, solid, stack, stacked, steel, strength, strong, structural, structure, support, technology, truss, warehouse, welded,