Ключевые слова: abstract, aluminum, angle, angleiron, building, bunch, bundle, capping, cast, closeup, concrete, construction, corrosion, cylinder, diminishing, durable, factory, ferrous, fittings, fusing, galvanized, girder, group, heap, hotdip, industrial, industry, iron, joist, manufacture, material, metal, metallic, objects, parallel, pattern, perspective, plate, rod, rough, rust, stack, steel, storehouse, straight, technological, technology, tube, warehouse,