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Automatic Duct Flange Machine for Ventilation & Fire Pipe | China Suppliers & Factory for Thin Material Forming

Introducing our V4-2 Automatic Flange Machine, expertly designed by our factory in China with over 20 years of experience in manufacturing cold roll forming equipment. This innovative solution is specifically engineered for forming flanges from 0.4-0.6mm galvanized steel coils. Addressing common challenges faced by suppliers and manufacturers, our machine effectively eliminates issues such as material run-off, loose joints, and deformation, ensuring precise flange formation. Suitable for producing both ordinary ventilation duct flanges and fire pipe flange frames, the V4-2 delivers one-pass formation without the need for secondary grinding or correction. This makes it an ideal, hassle-free choice for small and medium processing plants and construction teams looking for reliable performance from a trusted supplier
    Contact us LIDING
    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
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    Automatic Duct Flange Machine air Duct Flange Frame Ventilation Duct Manufacturing Flange Machine (1).jpg
    Product Details

    Liding Why do professionals choose LIDING flange machines?

    Optimized for thin materials, unbeatable forming accuracy

    Most flange machines on the market work fine with thick materials, but they struggle with 0.4-0.6mm thin galvanized sheets—they run off track, wrinkle, and leave loose joints. We’ve tweaked the roll profile curve for over a decade, so thin materials run as steady as a rock. The dimensional error of the formed flange frame is controlled within 0.5mm, and the joints fit perfectly. No need to hammer and correct on site, just install directly. The scrap rate is more than 10% lower than ordinary machines.
    Unmatched Production Efficiency & Labor Savings

    4-ton heavy frame, built for nonstop operation

    Don’t underestimate this 4-ton weight—it’s all solid thick steel plate welded together. Many cheap machines cut corners on the frame, making them light and wobbly when running fast, with loud noise and frequent breakdowns. Our machine runs at full 6m/min for 8 hours straight, as stable as if it’s rooted to the ground. It has low vibration and low noise, so workers can work comfortably next to it, and the failure rate is almost negligible.
    High-Grade Materials & Long Service Life

    Ridiculously easy to operate, saves you the salary of a senior technician

    The imported touch screen interface is crystal clear, all parameters are marked in English, and common flange sizes can be saved as presets. No need to hire expensive senior technicians. Any ordinary worker can master it after watching a 30-minute video and practicing twice. One person can handle the whole process of feeding, production and discharging, cutting labor costs in half directly.
    Precise Forming Meeting International Standards

    No hassle after-sales, respond within 3 hours

    The worst thing for construction projects is a broken machine with no one to fix it, delaying the schedule. Our technical team is online 24/7, responds to messages within 3 hours, and provides free remote troubleshooting. All wearing parts are replaced for free during the warranty period. If on-site service is needed, our engineers can fly to any country in the world, providing one-stop installation, commissioning and training.
    Intelligent PLC Control & Easy Operation

    Standard Production Process

    • 1 Galvanized Steel Coil Loading
    • 2 Automatic Feeding & Leveling
    • 3 14-Station Continuous Roll Forming
    • 4 Hydraulic Precision Fixed-Length Cutting
    • 5 Finished Flange Frame Automatic Discharging
    Standard Production Process

    Frequently Asked Questions

    Q: Can the LIDING flange machine process thin galvanized sheets?

    Yes. LIDING flange machines are specifically optimized for thin materials (0.4-0.6mm). Thanks to over a decade of roll profile curve adjustments, our machines ensure stable forming with dimensional errors kept within 0.5mm, preventing wrinkling and loose joints.

    Q: Why is the 4-ton weight of the machine frame important?

    The 4-ton weight comes from solid, thick welded steel plates. This heavy-duty frame ensures maximum stability during continuous high-speed operations (6m/min for 8 hours), minimizing vibration, reducing noise, and significantly lowering the machine failure rate compared to lighter alternatives.

    Q: Is it difficult to operate the flange machine?

    No, it is extremely easy. The machine features an imported touch screen interface with clear English parameters and preset sizes. An ordinary worker can master the operation within 30 minutes, allowing one person to handle feeding, production, and discharging.

    Q: What is the response time for after-sales technical support?

    Our technical support team is online 24/7 and guarantees a response within 3 hours. We provide free remote troubleshooting, free wear parts replacement during the warranty period, and global on-site engineering services for installation and training.

    Q: What is the standard production workflow of the LIDING flange machine?

    The automated workflow follows 5 steps: Galvanized Steel Coil Loading → Automatic Feeding & Leveling → 14-Station Continuous Roll Forming → Hydraulic Precision Fixed-Length Cutting → Finished Flange Frame Automatic Discharging.

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