China 2-in-1 PDF20/30 Flange Roll Forming Machine - Reliable Suppliers & Factory for HVAC Duct Making
liding Why do professionals choose LIDING flange machines?
One machine does two jobs, cuts your costs in half
No more buying two separate machines for PDF20 and PDF30 flanges. This single unit switches between the two sizes in minutes, saving you thousands of dollars in equipment costs and precious workshop space. It’s the most cost-effective solution for mixed-batch duct production.
36 precision rollers make perfect flanges every time
We use 36 sets of precision-machined Cr12 steel rollers, heat-treated to HRC55–57° for maximum wear resistance. The multi-stage forming process ensures flat, straight flanges with tight, leak-proof joints. No more bending, no more rework, no more wasted material.
Built like a tank for nonstop daily use
This machine is overbuilt to handle 8-hour nonstop production. The 40mm thick solid side plates and heavy-duty frame eliminate vibration and shaking. The 45# steel quenched spindles and high-quality bearings run smooth and quiet, with minimal maintenance required.
Dead simple to operate, no fancy skills needed
The control panel is straightforward with just three main functions: forward, reverse, and emergency stop. Any worker can master it in 15 minutes, no special training required. We also include free wearing parts with every machine and provide lifetime technical support.
Standard Production Process
Frequently Asked Questions
Q: Can this machine produce both PDF20 and PDF30 flange sizes?
Yes, the LIDING flange machine is designed to switch between PDF20 and PDF30 flange forming sizes quickly in just a few minutes, eliminating the need to purchase two separate machines.
Q: What materials are the forming rollers made of?
We use 36 sets of precision-machined Cr12 steel rollers. These rollers undergo heat treatment to HRC55–57° to ensure maximum wear resistance and an exceptionally long service life.
Q: Is the machine difficult to operate?
No, it is very simple to operate. The system features a straightforward control panel with forward, reverse, and emergency stop functions, allowing any worker to master it within 15 minutes.
Q: Can the machine handle heavy-duty, continuous daily production?
Absolutely. Built with 40mm thick solid side plates, a heavy-duty frame, and 45# steel quenched spindles, this machine is engineered to run nonstop for 8-hour daily shifts with minimal maintenance.
Q: What is the standard production flow for this machine?
The workflow is: Galvanized Steel Coil Loading → Automatic Feeding & Leveling → 36-Set Continuous Roll Forming → Precision Fixed-Length Cutting → Finished PDF Flange Discharging.
Q: What kind of after-sales support do you provide?
We provide free wearing parts with every machine shipment and offer lifetime technical support to ensure your duct production line runs without interruptions.