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High-Quality China Suppliers Factory Duct Making Machine for Square Air Duct Production Line

Introducing our advanced Liding square air duct production line, proudly developed and manufactured in China. With over 20 years of expertise in cold roll forming, our factory delivers a high-efficiency and fully automated integrated solution tailored for the one-stop production of rectangular HVAC ducts. Designed to cater to the needs of professional duct manufacturers, building material suppliers, and large-scale construction contractors, this cutting-edge equipment meets the demands for large-scale and customized duct production. Optimize your operations with our reliable technology and elevate your business in the HVAC industry
    Contact us LIDING
    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
    certification
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    Product Details

    LIDING

    Why do professionals choose LIDING flange machines?

    Unmatched Production Efficiency & Labor Savings

    Our square duct production line runs at 10m/min, 2–3 times faster than standard semi-automatic machines. Fully automatic one-stop production only requires 1-2 operators, cutting labor costs by over 80%. It supports forward, reverse and emergency stop functions to perfectly fit various production speeds and batch processing demands.

    Unmatched Production Efficiency & Labor Savings

    High-Grade Materials & Long Service Life

    Core rollers adopt high-quality GCr15 steel, optional CR12MOV alloy steel heat-treated to HRC62–64°, offering excellent wear resistance and 3x longer service life than common carbon steel rollers. 45mm 45# steel shaft ensures stable high-load long-term operation. Precision-machined cutting blades deliver clean, burr-free cuts without frequent replacement.

    High-Grade Materials & Long Service Life

    Precise Forming Meeting International Standards

    Multi-station continuous roll forming with optional servo fly-cutting ensures accurate duct dimensions and stable structure. High forming accuracy and good air tightness strictly meet international HVAC duct standards, eliminating on-site rework and greatly reducing material waste and installation costs.

    Precise Forming Meeting International Standards

    Intelligent PLC Control & Easy Operation

    Imported PLC control system, converter and touch panel enable simple one-click parameter setting. No professional technical skills required. International brand electrical parts guarantee stable performance, low failure rate and easy daily maintenance. We provide free online technical support and replacement parts during the warranty period.

    Intelligent PLC Control & Easy Operation

    Standard Production Process

    Decoiler Feeding → Automatic leveling and grooving → Punching notches and positioning holes → Precision fixed-length cutting → Edge folding → Seaming forming → Flange integration → Finished duct discharging
    Standard Production Process

    Frequently Asked Questions (FAQ)

    What is the production speed of the LIDING flange machine line?
    Our square duct production line operates at 10m/min, which is 2–3 times faster than standard semi-automatic machines, significantly optimizing output and efficiency.
    What materials are used to ensure the long service life of the rollers?
    The core rollers utilize high-quality GCr15 steel, with optional CR12MOV alloy steel heat-treated to HRC62–64°. This delivers excellent wear resistance and a service life 3 times longer than common carbon steel rollers.
    Do LIDING flange machines meet international HVAC standards?
    Yes. With multi-station continuous roll forming and optional servo fly-cutting, our machines ensure highly accurate duct dimensions and airtightness that strictly meet international HVAC duct standards.
    Is the operation of LIDING flange machines complicated?
    Not at all. The system is equipped with an imported PLC control system, converter, and touch panel, allowing simple one-click parameter settings. No professional technical skills are required to operate it.
    What is the standard production process of the LIDING duct line?
    The standard process is: Decoiler Feeding → Automatic leveling and grooving → Punching notches and positioning holes → Precision fixed-length cutting → Edge folding → Seaming forming → Flange integration → Finished duct discharging.
    What support and warranty services do you provide?
    We provide free online technical support and replacement parts during the warranty period to ensure your production line runs smoothly and reliably.

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