Ключевые слова: abstract, art, background, business, color image, colours, concepts, connection, construction industry, curve, design, engineering, factory, flow, form, futuristic, gear, gold, graphic, horizontal, ideas, industry, inside, liquid, machine, machinery, manufacturing, material, mechanic, metal, minimal, network, no people, pattern, pipe, pipe tube, pipeline, power, purple, recycling, shape, stack, steel, structure, technology, textured, tube, water pipe,