Ключевые слова: abstract, arrangement, background, black white, circles, close up, concentric, construction, construction equipment, construction material, cylinder, equipment, front view, group of objects, hole, illusion, in a row, industrial equipment, industry, many, material, pattern, pipeline, pipes, plastic, pvc, repetition, rolled up, round, shadow, stack, texture, textured, tubes, tubing, tubular, variation, wallpaper pattern, water pipe,