Ключевые слова: aluminium, architecture, background, building, ceiling, cement, concrete, connect, connection, construction, design, duct, electric, electrical, engineering, fire, floor, gas, hanging, home, indoor, industrial, industry, infrastructure, installation, interior, join, junction, line, long, metal, metallic, pipe, pipeline, piping, plan, plumbing, prevention, red, safety, sign, signal, silver, site, steel, structure, system, technical, tool, tube,