PDF3 Duplex Duct Flange Forming Machine
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?
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
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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.
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Heavy-Duty Industrial Structure & Long Service Life
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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.
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High Precision Forming & Fully Meet Industry Standards
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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.
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Reliable Global After-Sales & Full-Process Quality Assurance
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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.
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Standard Production Process
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Galvanized Steel Coil Loading → Automatic Feeding Feeding → levelling → Beading → Angle punching (square) → Shearing → Entering the PDF flange forming → bending.
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lindingApplicable Industries & Application Scenarios
This multifunctional flange machine is essential equipment for ventilation and fire protection projects, widely used in:
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.
GET IN TOUCH WITH US

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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.
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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.
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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.
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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.
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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.
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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.





