Ключевые слова: abstract, background, building, business, chrome, circle, close, closeup, commodities, construction, cut, design, duct, equipment, group, industrial, industry, iron, manufacture, manufacturing, material, metal, metallic, new, nobody, pipe, pipeline, pipes, piping, plumbing, profile, round, set, shiny, silver, stack, stacked, stainless, steel, storage, structure, supply, technology, tube, up, warehouse, water,