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Self-supporting Steel Chimney
Self-supporting (freestanding) industrial steel chimneys are widely used for boilers, generators, and process exhaust where a compact footprint and high structural reliability are required.

RAINBOW designs self-supporting steel stacks with a focus on strength, vibration control, corrosion protection, and safe maintenance access (platforms, ladders, manholes, and aviation warning systems as required). We have delivered large-scale projects, including a 135-meter sleeve self-supporting steel chimney. Contact us for preliminary sizing and a project-specific quotation.
Generator Flue System The generator exhaust system primarily consists of exhaust ducts, a chimney, and associated components. Its main function is to safely discharge the exhaust gases generated during the operation of the generator, ensuring effective dispersion of these gases to prevent harm to equipment and the environment. Additionally, the system is easy to install and has low maintenance costs, providing reliable assurance for the stable operation of the generator.
All Flue Twin Wall Twist Locking Flue System A versatile chimney system designed to accommodate all types of fuel including wood, coal, and gas. Distinguished by its plug-in design & spigot connection, it facilitates an easy installation and secure fitting.
Cluster Steel Chimney
RAINBOW cluster industrial steel chimneys integrate multiple flues into one compact structure—ideal for power and energy projects with limited space or multiple emission sources.

Benefits include space-saving layout, modular installation, corrosion resistance, optimized maintenance planning, and recyclable steel structure.

Each cluster steel stack is custom engineered to match your duct arrangement, thermal expansion requirements, and applicable local standards.
Boiler Chimney System Suzhou Rainbow Environmental Equipment Co., Ltd. specializes in advanced Boiler Chimney Systems. Designed for various boilers, these systems use high-quality, high-temperature, and corrosion-resistant materials to efficiently discharge exhaust gases. Rigorously tested for safety and reliability, they enhance boiler combustion efficiency while preventing leakage and collapse risks.
All Flue Twin Wall Push-Fit Flue System With specially designed socket connection process (both the inner and outer layers of the product are made of 304/316L stainless steel, meeting the requirements for quick retrofitting and convenient maintenance and replacement).
Tower Type Steel Chimney
RAINBOW tower-type industrial steel chimneys use an external tower structure to support the flue, enabling very tall stacks and flexible layout solutions. The inner flue can be designed for high-temperature exhaust with appropriate insulation and corrosion protection.

This configuration is often selected when projects require large height, strong wind resistance, and convenient maintenance.
Pellet Stove Flue System Specifically designed for pellet-burning stoves, this chimney system efficiently vents smoke and gases. It is typically made of stainless steel or Aluminized plate for durability and corrosion resistance.
Landscaped Steel Chimney
RAINBOW landscaped industrial steel chimneys combine emission functionality with architectural appearance—helping industrial plants meet city aesthetics, industrial park image requirements, and landmark design goals. We integrate structural safety, corrosion protection, access safety and facade/lighting concepts into one coordinated design.

If your project is located in an urban zone or has strict appearance requirements, contact our team for a customized landscaped chimney concept.
Gas Flue System This type of chimney system is designed for gas appliances. It effectively exhausts combustion gases and condensation to the outside, ensuring safe and efficient operation of the appliances.