Automatic Angle Steel Flange Making Machine
Automatic angle steel flange forming from coil — feed, roll, bend, and cut in one pass.
Designed for HVAC and industrial duct manufacturers, this machine transforms angle steel coils into precision circular flanges without manual intervention. Factory buyers reduce labor costs while achieving consistent 17 m/min production speeds across five standard angle profiles.
Key Specs
Key Specs
Weight
Dimension
Speed
Overview Points
Five Profile Range
Minimum 200mm Diameter
17 m/min Speed
Memory Storage
Servo Precision
FL-50-1 Punching
Delta PLC
Dual 15kW Power
Key Features
The FL-50 feeds angle steel directly from coil stock through an integrated uncoiling station, multi-stage roller forming system, rolling unit, and automatic cutoff — producing finished circular flanges without manual transfer between stations. This single-pass workflow eliminates handling bottlenecks and keeps output at 17 m/min.
Adjustable diameter molds let operators switch between flange sizes starting from Ø200mm without changing tooling. The machine accepts five standard angle steel profiles (30×20, 30×30, 40×20, 40×30, 50×30), covering both equilateral and unequal cross-sections used across HVAC and industrial duct connections.
A TFT touch screen paired with Delta PLC and servo drives from major international brands ensures accurate, repeatable forming. Operators store flange parameters — diameter, profile, quantity — and recall them instantly, cutting changeover time on repeat orders to minutes rather than hours.
The companion FL-50-1 hydraulic punching machine adds bolt holes directly on formed flanges, with customizable hole diameters (2–5mm) and spacing. This eliminates a separate drilling or punching station, reducing floor space and labor for flanges up to Ø1800mm.
At 1,750 kg with a 24,500mm × 2,250mm × 1,500mm footprint, the FL-50 is built for continuous factory operation. Dual 7.5kW motors provide the torque needed to form 3–5mm angle steel without speed loss, supporting shift-long production runs in high-volume duct fabrication environments.
Technical Specifications
The rounded angle steel flange forming machine FL-50 is a machine specially designed for the connection of flanges with circular ventilation ducts. It automatically feeds, forms, rolls and cuts. There is a matching automatic hydraulic punching machine for selection.
| Model | FL-50 |
| Working Thickness | 3-5mm |
| Angle Steel Size | 30*20 30*30 40*20 40*30 50*30 |
| Min Diameter | 200mm |
| Forming Speed | 17m/Min |
| Motor | 2×7.5KW |
| Weight | 1750kg |
| Dimension | 24500mm×2250 mm×1500mm |
| Model | FL-50-1 |
| Holes Distance | customerized |
| Hole Diameter | 2-5mm |
| Flange Diameter | ¢200-1800mm |
| Angel Steel Size | 30*20,30*30,40*20,40*30 |
Applications
HVAC circular duct flange fabrication for commercial and industrial ventilation systems
Spiral duct manufacturing lines requiring matched flanged connections
Industrial dust collection and fume extraction ductwork assembly
Refrigeration and cold storage air distribution system construction
General sheet metal and ductwork fabrication shops producing flanged joints
Large-scale building mechanical contractor workshops
Video
FAQ
The key specifications of Automatic Angle Steel Flange Making Machine include: Weight: 1750kg, Dimension: 24500mm×2250 mm×1500mm, Speed: 17m/Min. Contact us for the full specification sheet.
Automatic Angle Steel Flange Making Machine is widely used in: HVAC circular duct flange fabrication for commercial and industrial ventilation systems; Spiral duct manufacturing lines requiring matched flanged connections; Industrial dust collection and fume extraction ductwork assembly; Refrigeration and cold storage air distribution system construction.
All NTBOBO machines come with a 1-year warranty from the date of Bill of Lading. Our engineering team provides 24-hour technical support throughout the warranty period.
We accept 30% down payment by T/T (Telegraphic Transfer), with the balance due before shipment. Other payment arrangements can be discussed for long-term partners.
Standard delivery is within 10-35 working days after receiving the down payment, depending on the machine model and customization requirements.
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