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PDF3 Duplex Duct Flange Forming Machine

The PDF Duplex machine can be integrated with other functions to upgrade to an automated duct production line. (Heavy-duty 36-station roller, with precision design)
Rigorously factory-tested for flange flatness and duct squareness. PLC-controlled, handles 0.6–1.0 mm steel. 30 years’ expertise in handling large-scale HVAC orders. Get an expert quote!

    30 +
    Years of Experiences
    500+
    clients worldwide
    CE
    certification

    lidingVideo

    lidingTechnical Specifications

    PDF Duplex Forming Machine Basic Model
    Brand Name Liding / Customized
    Model Number PDF3-20 or PDF3-30
    Feed width 1200–1500 mm (adjustable)
    Motor K77 Gearbox ,11kw
    Applicable Pipe Material GI Steel Sheet
    Standard Material Thickness 0.6-0.8mm for PDF20 / 0.8-1.0mm for PDF30
    Rated Voltage 380V 50Hz 3 Phases or as request
    Forming Station 36 stations × 2 sides
    Driving System Gear + Chain Combined Drive
    Roller Material Cr12mov / Gcr15,quenched HRC60-62°
    Duct size range 250×250mm——1500×1500mm
    Forming Speed 10m/min
    Equipment Net Weight 7500kgs
    Overall Dimension (LWH) 6000*2320*1600mm
    PLC Brand Imported brand
    Warranty Period 1 Year
    Outgoing Inspection Video outgoing-inspection & Machinery Test Report Provided
    Certification CE ISO
    Standard Delivery Time 3 months

    lidingWhy do professionals choose LIDING flange machines?

    The PDF3 Duplex duct flange forming machine is a high-speed, dual-side forming solution designed specifically for HVAC air duct manufacturers running high-volume production.
    Unlike single-side formers that process one flange at a time, this machine forms both sides simultaneously — effectively doubling your output with the same labor. It runs PDF3 profiles with material thickness from 0.6mm to 1.0mm, producing consistent, fully formed flanges ready for installation.
    The machine is built as a standalone unit but designed with expansion in mind. You can integrate it with the decoiler, the main machine ,lockformer, and bending station to build a fully automated production line as your business grows.

    Easy To Operate & Fully Automatic Control, Big Labor Savings

    • This production line adopts an imported PLC control system with an industrial touch screen operation interface, all parameters are visualized and adjustable, and common duct specifications can be saved as one-click presets. No need for professional senior technicians, ordinary workers can fully master the equipment operation after a short period of training, and one worker can manage the whole production line, which cuts labor costs by more than 80%. The whole process is fully automatic, supporting forward, reverse, emergency stop, and stepless speed regulation, easily adapting to large-batch and small-batch customized production.
    • High Quality PDF Steel Coil Flange Profile Machine detail (1)

      Heavy-Duty Industrial Structure & Long Service Life

      • The machine features a heavy-duty, fully welded frame measuring 6000 × 2320 × 1600 mm, with a net weight of 7500 kg. It is constructed from thick steel plates welded as a single unit and has undergone rigorous stress-relief treatment to ensure it remains free from deformation or vibration during prolonged, high-load continuous operation. The 11 kW high-power drive system ensures stable power output during continuous production. Four servo motors, totalling 6 kW, provide automatic width adjustment, with a feed width range of 1200–1500 mm. The core forming rollers are made from high-quality GCr15 steel and can be upgraded to Cr12MoV alloy steel heat-treated to HRC 62–64°, offering exceptional wear resistance. Their service life is three times that of ordinary steel, resulting in a low failure rate and minimal maintenance requirements throughout their entire lifecycle.
      • High-Grade Materials & Long Service Life

      High Precision Forming & Fully Meet Industry Standards

      • Multi-station continuous roll forming structure and imported high-precision control system ensure stable dimensional tolerance and high straightness of the finished ducts. The formed flange joints are tightly fitted with zero air leakage, no on-site modification, no material waste, greatly reducing installation cost and improving project quality. The whole machine complies with CE and ISO international standards, and the finished products fully meet the strict requirements of commercial HVAC engineering, fire protection engineering and industrial ventilation projects.
      • Precise Forming Meeting International Standards

      Reliable Global After-Sales & Full-Process Quality Assurance

      • We provide full-process quality assurance for each equipment: raw material incoming inspection, production process full inspection, pre-delivery full-load test run, and we provide video outgoing-inspection and complete machinery test report for each machine before delivery. We provide 1-year full warranty for the whole machine, free online technical support for life, and free replacement of defective parts within the warranty period. Our after-sales engineers are available to service machinery overseas, providing one-stop on-site installation, commissioning and operation training services for global customers.
      • Intelligent PLC Control & Easy Operation

      Standard Production Process

      • Galvanized Steel Coil Loading → Automatic Feeding Feeding → levelling → Beading → Angle punching (square) → Shearing → Entering the PDF flange forming → bending.
      • Standard Production Process

      lindingApplicable Industries & Application Scenarios

      This multifunctional flange machine is essential equipment for ventilation and fire protection projects, widely used in:

      Applicable Industries & Application Scenarios

      Commercial & Civil HVAC Engineering

      ● Central air conditioning ventilation duct flange production for office buildings, hotels, hospitals, shopping malls and residences.

      Industrial Ventilation & Dust Removal Systems

      ● Ventilation, dust removal and exhaust gas discharge pipe flange manufacturing for factory workshops, warehouses and mines.

      Factories upgrading their ductwork equipment

      ● Customers who are currently purchasing a duplex flange machine but plan to upgrade to a fully automated production line in the future.

      Building Material Processing & Site Prefabrication

      ● Small batch customization for building material stores, on-site prefabrication at construction sites, and flange processing for renovation projects.

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      High Quality PDF Steel Coil Flange Profile Machine detail (2)
      6579a0f34a56821986

      FAQ

      • 1

        What are your prices?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.

      • 2

        Do you have a minimum order quantity?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.

      • 3

        Can you supply the relevant documentation?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.

      • 4

        What is the average lead time?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.

      • 5

        Can you supply the relevant documentation?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.

      • 6

        What is the average lead time?

        Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.