Round Angle Iron Flange / Galvanized Circular Duct Flange / Punched Round Flange
Galvanized circular duct angle steel flange, pre-punched holes, durable anti-corrosion HVAC duct connector.
Galvanized round angle iron punching flange for circular HVAC ventilation ducts. Anti-rust, high rigidity, pre-punched holes, easy installation, custom size available.
Product Description
The Round Angle Iron Flange is specifically designed for circular HVAC duct systems, providing a strong, stable, and airtight connection between spiral or round ducts. Made from high-quality galvanized steel, this flange ensures excellent corrosion resistance and long-term durability in various ventilation environments.
The flange is manufactured with precision-punched bolt holes for accurate alignment and fast installation. It is widely used in HVAC, air conditioning, and industrial ventilation systems.
Key Features
- Robust Construction: Made of high-strength galvanized angle steel for enhanced rigidity
- Corrosion Resistance: Zinc coating protects against rust and harsh environments
- Precision Punched Holes: Ensures easy alignment and secure bolted connection
- Wide Size Range: Available from Ø100mm to Ø2000mm (custom sizes supported)
- Flexible Thickness Options: Typically 2–5mm depending on diameter
- Customizable: Hole quantity, diameter, thickness, and dimensions can be tailored
Applications
- Spiral duct systems
- Round HVAC air ducts
- Ventilation and exhaust systems
- Industrial air handling systems
Specifications
- Material: Galvanized Steel (GI)
- Type: Round / Circular Flange
- Diameter Range: Ø100mm – Ø2000mm
- Thickness: 2mm – 5mm
- Hole Type: Punched bolt holes
- Connection Method: Bolted flange connection
- Surface Treatment: Pre-galvanized or hot-dip galvanized
Keywords
- Round Duct Flange
- Circular Flange
- Angle Iron Flange
- GI Flange
- Spiral Duct Flange
- HVAC Flange System
- Punched Flange Ring





