Ключевые слова: aluminum, architecture, background, blue, building, business, ceiling, civil, construction, design, drainage, duct, electrical, engineering, equipment, factory, fire, foil, gas, hvac, image, industrial, industry, installation, interior, isolated, line, modern, office, pattern, pipe, pipeline, pipes, piping, plumbing, protection, pvc, red, safety, sprinkler, steel, system, systems, technology, tube, ventilation, wall, warehouse, water, white,