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China GDF20/30 Flange Roll Forming Machine - HVAC Duct Profile Equipment by Leading Suppliers and Factory

Introducing the GDF20/30 flange roll forming machine, engineered by a leading China supplier with over 20 years of experience in cold roll forming equipment production. This advanced machine is specifically designed for global HVAC duct manufacturing, enabling the production of both GDF20 and GDF30 standard flange sizes within a single unit. By eliminating the frequent need for mold replacement, our solution significantly enhances production efficiency while reducing mold replacement costs. It effectively addresses common industry challenges such as unstable forming accuracy of thin galvanized sheets. Ideal for HVAC duct processing plants, fire protection engineering companies, and building material prefabrication factories, this machine represents the core production equipment for any manufacturing facility looking to streamline operations and improve output. Choose our reliable factory to meet your HVAC production needs with precision and quality
    Contact us LIDING
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    Product Details

    LIDING Why do professionals choose LIDING flange machines?

    ✔ Dual-size one machine design, double production efficiency

    Traditional flange machines can only produce one size of flange, and need to stop production for hours to replace molds when switching specifications. Our GDF20/30 machine realizes the production of two mainstream GDF flange sizes on one equipment, no mold replacement is required, and specification switching can be completed in a few minutes. For duct processing plants with multi-specification and small-batch production needs, it directly doubles the production efficiency and saves a lot of mold costs.
    Unmatched Production Efficiency & Labor Savings

    ✔ 18-station precision forming, stable quality for long-term operation

    The machine is equipped with 18 sets of forming rollers, made of high-quality GCr15 bearing steel, with professional heat treatment to HRC55°~57°, which has high hardness, wear resistance and long service life. The 40mm diameter 45# steel spindle ensures the stability of the roller set during high-speed operation, no jitter, no deviation, and the formed flange has uniform dimensions, tight joints, and no air leakage after installation. The dimensional error is controlled within ±0.3mm, which fully meets the international HVAC engineering standards.
    High-Grade Materials & Long Service Life

    ✔ Stable transmission system, low failure rate and low maintenance cost

    Adopting chain and gear combined transmission mode, matched with 5.5kW high-power national standard motor, the transmission is stable and the power is sufficient. It can maintain 8m/min high-speed continuous operation for a long time without failure. The structure design is simple and reasonable, the wearing parts are easy to replace, and the later maintenance cost is extremely low. Even in the workshop environment of 8-hour non-stop production every day, the equipment can maintain stable performance for more than 10 years.
    Precise Forming Meeting International Standards

    ✔ Fool-style operation, zero threshold for workers

    The machine is equipped with a simple and intuitive control panel, with forward, reverse and stop core control functions, no complex programming operation is required. Ordinary workers can master the full operation of the equipment after 15 minutes of simple training, and one person can complete the whole process of feeding, production and discharging. There is no need to hire professional technicians, which directly reduces the labor cost of the factory.
    Intelligent PLC Control & Easy Operation

    ✔ Standard Production Process

    Galvanized Sheet Coil Loading → Automatic Feeding & Guiding → 18-Station Continuous Roll Forming → Precision Fixed-Length Cutting → Finished GDF Flange Automatic Discharging
    Standard Production Process

    Frequently Asked Questions

    Q: Can the GDF20/30 machine produce two sizes of flanges without changing molds?

    Yes, the GDF20/30 machine features a dual-size design that allows you to switch between two mainstream GDF flange sizes in minutes without stopping production to replace molds.

    Q: What materials are used for the forming rollers?

    The 18 sets of forming rollers are made of high-quality GCr15 bearing steel, heat-treated to HRC55°~57° for high wear resistance and a long service life.

    Q: What is the dimensional error control of the formed flanges?

    The dimensional error is controlled within ±0.3mm, which fully meets international HVAC engineering standards for tight joints and zero air leakage.

    Q: Is the operation of the LIDING flange machine complicated?

    No, it features a simple control panel with forward, reverse, and stop functions. Workers can master the full operation in just 15 minutes of training.

    Q: What is the standard production process of the machine?

    The process is: Galvanized Sheet Coil Loading → Automatic Feeding & Guiding → 18-Station Continuous Roll Forming → Precision Fixed-Length Cutting → Finished GDF Flange Automatic Discharging.

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