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China Suppliers Factory Hot Sale Spiral Round Duct Forming Machine | 16kw Power for HVAC Systems

Introducing our advanced spiral duct machine, designed specifically for small-to-medium duct fabricators and construction teams. With over 20 years of expertise in manufacturing duct equipment in China, we are proud to provide a solution that replaces outdated manual seamed iron pipes that often leak air and are time-consuming to produce. Our fully mechanized production process eliminates the need for hand tapping and welding, ensuring a leak-free performance. This heavy-duty machine is user-friendly and compact enough to be transported directly to your job site. Choose our factory as your trusted supplier for high-quality duct solutions that enhance efficiency and reliability in your projects
    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

    How does the LIDING patented mold system save costs?

    Our patented mold system allows you to switch between different duct diameters in just minutes without struggling with complicated mold changes. Its precision design also cuts down on scrap material by up to 15%, resulting in significant savings on steel costs over the year.

    What is the advantage of the high-speed synchronous cutting system?

    The integrated cutting system runs in perfect synchronization with the feeding speed. This prevents crooked cuts and material jams, delivering clean, burr-free edges every time without requiring extra sanding or trimming. It can handle speeds up to 35m/min.

    Is specialized training needed to operate the LIDING flange machine?

    No, the machine is designed to be user-friendly. Thanks to the intuitive touch screen PLC console, a regular worker can master the operation with just 30 minutes of training, eliminating the need for expensive specialized technicians.

    Can this machine be used directly on job sites?

    Yes, the LIDING flange machine is built tough enough to operate reliably on construction and job sites, not just within controlled workshop environments.

    What is the standard production process of the machine?

    The standard workflow 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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