Ключевые слова: background texture, backgrounds, blue sky, building, canalization, cement, circle, circles, closeup, concrete, concrete drainage pipes, concrete pipes, construction, construction industry, construction material, construction site, cylinder, engineering, gray, group of objects, hole, industry, material, minimalism, pipe, pipe tube, pipeline, round, sewage, sky clouds, stack pipes, steps, stockpile, system, tube, tubes, vessel, vessels, warehouse, water, water discharges, water pipe, wells,