Ключевые слова: antique, architecture, background, building, color, construction, design, detail, equipment, flow, gate, gear, gears, grunge, handle, history, industrial, industry, iron, machine, mechanism, metal, object, old, pipe, pipeline, pipes, piping, plant, plumbing, pressure, pump, relief, rust, spring, springs, station, steam, steel, steel texture, technology, transportation, travel, treatment, turn, valve, valves, vintage, water, wheel,