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Turnkey Production Line for Hollow Damper Blades | China Suppliers' Integrated HVAC Solution for Factories

Looking for efficient cold roll forming equipment? As a leading China manufacturer with 30 years of experience, we understand the challenges faced by mid-to-large HVAC factories. Many struggle with fragmented damper production due to separate machines that create bottlenecks, manual hemming that results in uneven seals, and leaky blades that consistently fail fire inspections. Our Liding 4-machine turnkey line addresses these issues effectively. This innovative system transforms raw metal coils into fully sealed, ready-to-assemble hollow blades in a seamless process. Say goodbye to manual transfers, rework, and failed inspections. Partner with us, one of the top suppliers in the industry, to elevate your commercial and fire-rated damper manufacturing to new heights with our ultimate production solution
    Contact us LIDING
    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
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    Product Details

    LIDING Why choose this machine?

    True turnkey delivery, start production in 3 days

    No more wasting months integrating separate machines from different suppliers. We deliver the entire coordinated system, install it, and train your workers. You’ll be producing qualified blades within 3 days of delivery. No more production delays from incompatible equipment.
    Unmatched Production Efficiency & Labor Savings

    100% airtight blades that pass every fire inspection

    The unique dual-strip hemming technology creates a seamless, permanent seal that no manual process can match. Our customers report zero inspection failures after switching to this line. No more rejected orders, no more costly reworks, no more damage to your reputation.
    High-Grade Materials & Long Service Life

    Double the output, half the labor

    This line produces two blades at the same time, delivering 60% higher actual output than single-strip machines. Only one operator is needed to monitor the entire process, replacing 5-6 manual workers. Your labor costs will drop by 70% while production capacity doubles.
    Precise Forming Meeting International Standards

    Built to last 15+ years with minimal maintenance

    All rollers are made of premium CR12MOV steel, quenched to HRC57-59° and precision machined after heat treatment. The heavy-duty steel frame eliminates vibration even at full speed. This line will run reliably 8 hours a day, 6 days a week for over 15 years with only basic maintenance.
    Intelligent PLC Control & Easy Operation

    Standard Production Process

    · Decoiling & Dual-Strip Forming: Raw metal coil is uncoiled and simultaneously formed into two identical pre-profiles.
    · Edge Hemming & Sealing: The two pre-profiles are fed into the hemming machine, where edges are folded and precision-sealed together to form a single robust hollow blade.
    · Hydraulic Cutting: The continuous sealed profile is cut to exact specified lengths.
    · Hydraulic Punching: All pivot holes and mounting holes are automatically punched with high accuracy, preparing blades for final assembly.
    Standard Production Process

    Frequently Asked Questions

    How fast can we start production after delivery?

    With our true turnkey delivery service, we install the entire coordinated system and train your operators. You will be able to start producing qualified HVAC damper blades within 3 days of delivery.

    How does the machine guarantee 100% airtightness for the blades?

    The machine utilizes a unique dual-strip hemming technology that creates a seamless, permanent seal. This highly precise method eliminates manual errors, helping the blades pass every fire inspection successfully.

    How much labor and cost can this production line save?

    This system produces two blades simultaneously, yielding 60% higher output than single-strip machines. Because only one operator is required to monitor the process, it replaces 5-6 manual workers and cuts labor costs by 70%.

    What materials are used to ensure the machine's long lifespan?

    All rollers are constructed from premium CR12MOV steel, quenched to HRC57-59° and precision machined after heat treatment. Combined with a heavy-duty steel frame, the machine is built to run reliably for over 15 years.

    What are the main stages of the standard production process?

    The automated process consists of four main stages: decoiling & dual-strip forming, edge hemming & sealing, hydraulic cutting to specified lengths, and hydraulic punching of pivot and mounting holes.

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