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High-Quality China Suppliers Factory Air Duct Production Line for Efficient Rectangular HVAC Ducts

Liding Square Air Duct Production Line is a leading solution developed and manufactured in China, backed by over 20 years of expertise in cold roll forming. This high-efficiency, fully automatic integrated device is specifically designed for the one-stop production of rectangular HVAC ducts. As one of the top suppliers in the industry, we cater to the large-scale and customized duct production needs of professional duct manufacturers, building material processors, and major construction contractors. Choose our factory for cutting-edge technology and exceptional performance in duct manufacturing
    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
    certification

    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

    Q What is the production speed of the LIDING flange machine production line?

    Our square duct production line runs at a speed of 10m/min, which is 2 to 3 times faster than standard semi-automatic machines, significantly boosting production efficiency.

    Q How many operators are required to run the production line?

    The fully automatic one-stop production line is designed for high labor savings and only requires 1 to 2 operators to manage, cutting overall labor costs by more than 80%.

    Q What materials are used for the rollers and shafts of the machine?

    The core rollers are made of high-quality GCr15 steel (with an optional CR12MOV alloy steel heat-treated to HRC62–64°), offering 3 times longer service life. The machine also utilizes a robust 45mm 45# steel shaft for stable, long-term operation.

    Q Do LIDING flange machines meet international standards?

    Yes. The multi-station continuous roll forming and optional servo fly-cutting ensure high forming accuracy and excellent air tightness that strictly comply with international HVAC duct standards.

    Q Is the control system easy to operate for beginners?

    Yes, the system is equipped with an imported PLC control system, converter, and touch panel for simple one-click parameter settings. No professional technical skills are required, and we offer free online technical support.

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