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.

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Key Specs

Key Specs

Weight

1750kg

Dimension

24500mm×2250 mm×1500mm

Speed

17m/Min

Overview Points

Five Profile Range

Handles 30×20mm to 50×30mm angle steel, 3-5mm thick, covering standard circular duct flanges

Minimum 200mm Diameter

Adjustable diameter molds eliminate separate tooling for different flange sizes

17 m/min Speed

Continuous uncoil-form-roll-cut cycle at 17 m/min with zero manual transfer between stations

Memory Storage

TFT touch screen saves flange specifications, reducing setup time between production runs

Servo Precision

International servo drives deliver repeatable diameter control for equilateral and unequal profiles

FL-50-1 Punching

Optional hydraulic unit punches 2-5mm holes at custom spacing on Ø200-1800mm flanges

Delta PLC

Controls forming and cutting sequence with straightforward diagnostics and programming

Dual 15kW Power

2×7.5kW motors supply consistent forming force across all angle steel sizes without stalling

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

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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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