Ключевые слова: construction, cylinder, durable, elements, engineering, equipment, factory, gray, group, heap, heavy, industrial, industry, iron, joist, manufacture, material, metal, metallic, objects, part, pile, pipe, pipeline, plant, profile, rectangle, rod, rough, round, row, rust, rusty, shelf, square, stack, steel, stock, storehouse, structure, technology, tube, warehouse,