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Liding China Suppliers Spiral Round Duct Forming Machine | 16kw HVAC Factory Equipment for Leak-Free Production

Introducing our state-of-the-art spiral duct machine, proudly manufactured in China. With over 20 years of experience, we are leading suppliers in duct equipment for small-to-medium fabricators and construction teams. Our innovative machine replaces traditional manual seamed iron pipes that often leak and require extensive labor. Enjoy fully mechanized production with no hand tapping or welding, ensuring a leak-free solution. Built tough and designed for ease of operation, this machine is compact enough to fit on a truck, making it ideal for transport directly to the job site. Choose our factory for reliable, efficient duct solutions that meet your needs
    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
    certification

    LIDING

    Why do professionals choose LIDING flange machines?

    Patented mold saves you time and material

    We designed our own patented mold system—no more struggling with complicated mold changes that take half a day. Switching between different duct diameters takes just minutes, and the precision design cuts down on scrap material by up to 15%. Over a year, that adds up to real savings on your steel costs.
    Unmatched Production Efficiency & Labor Savings

    High-speed synchronous cutting that never messes up

    The integrated high-speed cutting system runs perfectly in sync with the feeding speed, so you never get crooked cuts or stuck material. It cuts clean, burr-free edges every single time, no extra sanding or trimming needed. Crank the speed up to 35m/min when you’re up against a deadline, and it’ll keep up without breaking a sweat.
    High-Grade Materials & Long Service Life

    Dead simple to operate, no pro skills required

    The intuitive touch screen PLC console makes this machine a breeze to run. A regular worker can master it in 30 minutes of training—no need to hire expensive specialized technicians. All parameters are clearly displayed, and you can save common duct sizes as presets for one-click production.
    Precise Forming Meeting International Standards

    Tough enough for the job site, not just the workshop

    Metal coil loading → Automatic feeding and guiding → Spiral roll forming → Continuous outer surface locking → High-speed synchronous fixed-length cutting → Automatic roll out → Finished spiral duct.
    Intelligent PLC Control & Easy Operation

    Standard Production Process

    Manual Coil Feeding → Automatic leveling and straightening → 10-station continuous roll forming → Hydraulic precision cutting → Finished air duct/flange discharging
    Standard Production Process

    Frequently Asked Questions

    Q: How does LIDING's patented mold system save time and material?

    LIDING's patented mold system allows operator to switch between different duct diameters in just minutes, eliminating complicated mold adjustments. Additionally, its high-precision design reduces scrap metal material by up to 15%, resulting in significant steel cost savings over time.

    Q: What is the cutting speed of the synchronous cutting system?

    The high-speed synchronous cutting system is designed to run in perfect sync with the material feeding speed. It can handle production speeds up to 35m/min, delivering clean, burr-free edges without causing any material jams or crooked cuts.

    Q: Is specialized training required to operate LIDING flange machines?

    No, the machine features an intuitive touch screen PLC console. A standard operator can learn to run the system with just 30 minutes of training. Common duct sizes can also be saved as presets for quick, one-click production.

    Q: What is the workflow of the spiral duct forming process?

    The process follows these steps: Metal coil loading → Automatic feeding and guiding → Spiral roll forming → Continuous outer surface locking → High-speed synchronous fixed-length cutting → Automatic roll out → Finished spiral duct.

    Q: What steps are involved in the standard flange production process?

    The standard production process consists of: Manual Coil Feeding → Automatic leveling and straightening → 10-station continuous roll forming → Hydraulic precision cutting → Finished air duct/flange discharging.

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