Ключевые слова: background, blue, brown, cable, chemical, concept, concrete, construction, copyspace, corrosion, distillery, electric, electrical, engineer, engineering, equipment, evening, facilities, factory, gas, industrial, industry, infrastructure, iron, line, metal, nobody, outdoors, parallel, petrochemical, petroleum, pipe, pipeline, piping, plant, pollution, power station, rust, rusted, rusty, silver, sky, steel, support, system, tangle, tangled, technology, tube, valves,