Ключевые слова: aged, background, brick, connection, control, corrosion, dirty, drain, energy, engineering, equipment, faucet, fire, flow, fuel, gas, grain, grungy, handle, heat, hydrant, industrial, industry, iron, line, metal, natural, nut, oil, old, pipe, pipeline, power, pressure, rust, rusty, safety, shut, steel, supply, system, tap, texture, tube, valve, wall, water, wheel, white,