Ключевые слова: abstract, aluminium, background, blue, building, chemical, circle, closeup, color, construction, energy, engineering, environment, equipment, factory, gas, heavy, horizontal, industrial, industry, iron, large, manufacturing, material, metal, oil, old, pile, pipe, pipeline, pipes, piping, plant, power, refinery, round, rusty, shape, shiny, stack, stainless, steel, storage, structure, tank, technology, texture, tube, valve, water,