Ключевые слова: abstract, background, big, black, blue, chemical, close, craft, crude, device, economy, energy, engineering, equipment, faucet, flange, fuel, gas, gold, handle, industrial, industry, iron, isolated, line, machine, metal, money, oil, old, petrol, pipe, pipeline, pipes, piping, plant, power, pump, raw, rust, rusty, sewage, steel, technology, tube, unit, valve, valves, water, white,