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Rectangular Duct and Fittings
The Rectangular Duct is a core component in modern HVAC systems, designed to deliver efficient and balanced airflow for ventilation, heating, and cooling applications.
Made from high-quality galvanized steel, it offers excellent rigidity, corrosion resistance, and low air leakage, ensuring reliable long-term performance in both commercial and industrial environments.
Rectangular ducts are ideal for projects that require large airflow capacity and precise space utilization, such as office buildings, factories, hospitals, and underground parking systems.
Key Specifications
Material: Galvanized Steel (G90 / DX51D+Z)
Thickness: 0.5–1.2 mm (customizable)
Shape: Rectangular / Square
Standard: SMACNA / DW144 / ISO 9001
Connection: TDC / TDF / Flange / Slip Joint
Key Features
Precision Fabrication
Manufactured with CNC plasma cutting and automatic forming lines, each duct maintains precise dimensions and smooth edges, ensuring perfect alignment during installation.
Corrosion Resistance
The galvanized steel coating protects against rust and oxidation, extending service life even under high-humidity or coastal environments.
Airflow Efficiency
Smooth internal surfaces reduce frictional losses, stabilizing air velocity and pressure, which helps improve system energy efficiency.
Flexible Connection Options
Available in various joining systems—TDC, TDF, flange, or slip joint—providing easy installation and air-tight connections for different project types.
Technical Specifications
| Material | Galvanized Steel (G90 / DX51D+Z) |
|---|---|
| Thickness | 0.5–1.2 mm |
| Shape | Rectangular / Square |
| Length | 1000–1500 mm per section |
| Connection Type | TDC / TDF / Flange / Slip Joint |
| Surface Finish | Zinc Coated / Painted / Powder Coated |
| Standard | SMACNA / DW144 / ISO 9001 |
| Application | Air Conditioning, Ventilation, Smoke Exhaust |
Applications
Rectangular ducts are widely used in HVAC projects that demand large air volume and high structural stability.
Material & Manufacturing Process
Each rectangular duct is fabricated from prime galvanized steel coils using automated cutting and folding machines.
The production process ensures tight dimensional tolerance, reinforced seams, and high leak-tightness.
The production process ensures tight dimensional tolerance, reinforced seams, and high leak-tightness.
Installation & Connection Methods
Rectangular ducts are designed to suit multiple connection systems, depending on the installation scale and pressure class.
