Ключевые слова: architecture, background, bent, bronze, building, closeup, concrete, connection, construction, copper, dirty, drain, drainage, engineering, equipment, factory, faucet, gas, heat, home, house, industrial, installation, interior, iron, line, material, metal, object, old, pattern, pipe, pipeline, plastic, plumber, plumbing, power, safety, sewer, snake, steel, system, technology, tube, valve, wall, water, way, white, work,