Ключевые слова: abstract, aluminum, arrangement, black, chrome, circle, construction, cylinder, decline, economy, engineering, factory, goods, gray, group, heavy, industrial, industry, iron, manufacture, metal, metal industry, metallic, new, nobody, perspective, pipe, pipeline, plumbing, profile, round, shiny, silver, square, stack, stainless, steel, storage, structure, supply, technology, tube, tubing,