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China GDF20/30 Flange Roll Forming Machine - Top Suppliers for HVAC Duct Profile Factory Equipment

Introducing the GDF20/30 flange roll forming machine, designed for the global HVAC duct manufacturing industry by a leading factory with over 20 years of experience in cold roll forming equipment production. This innovative machine accommodates two standard flange sizes, GDF20 and GDF30, all within a single unit. It effectively eliminates the need for frequent mold changes, addressing common industry challenges such as low production efficiency, high mold replacement costs, and inconsistent forming accuracy of thin galvanized sheets. As a premier solution for HVAC duct processing plants, fire protection engineering companies, and building material prefabrication factories, this machine represents the cutting-edge of production technology. Discover the reliability and efficiency that China suppliers trust for their manufacturing needs
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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

    1 Galvanized Sheet Coil Loading
    2 Automatic Feeding & Guiding
    3 18-Station Continuous Roll Forming
    4 Precision Fixed-Length Cutting
    5 Finished GDF Flange Automatic Discharging
    Standard Production Process

    Frequently Asked Questions

    Q1. What are the main advantages of the dual-size flange machine design?

    Traditional machines require hours of downtime to replace molds when changing specifications. Our dual-size design allows the production of two mainstream GDF flange sizes on a single machine without mold replacement, completing specification switches in minutes and doubling efficiency.

    Q2. What materials are used for the forming rollers and spindles?

    The forming rollers are made of high-quality GCr15 bearing steel with heat treatment to HRC55°~57° for superior wear resistance. The spindles are 40mm diameter 45# steel, ensuring stability during high-speed operations.

    Q3. What is the dimensional accuracy of the formed flanges?

    The dimensional error is strictly controlled within ±0.3mm. This ensures uniform dimensions, tight joints, and zero air leakage, fully satisfying international HVAC engineering standards.

    Q4. How stable is the transmission system and what is the maintenance cost?

    The machine utilizes a chain and gear combined transmission mode with a 5.5kW national standard motor, supporting continuous 8m/min operation. The design is simple, making wearing parts easy to replace and keeping maintenance costs extremely low.

    Q5. Is professional training required to operate the LIDING flange machine?

    No. The machine features a simple control panel with basic forward, reverse, and stop controls. Ordinary workers can fully master the operation after just 15 minutes of training, making it a one-person job.

    Q6. What is the standard production flow of this equipment?

    The process flows from 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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