Вентиляционная труба 15, Ду-400

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Here is the rewritten text with the same tone, voice, and phrasing as the original: Metal chimneys are a crucial part of any industrial project. The exhaust tower must be designed to withstand harsh conditions while providing optimal airflow. Self-supporting structures like trusses and columns offer flexibility in installation. Steel and metal materials are ideal for construction due to their durability. Whether you're building a chimney for a GPU or a boiler, precise fabrication and design are essential. Chimneys come in various forms, including mast, facade, and column styles. When shopping for industrial chimneys, consider factors like material quality and structural integrity.