90° Spiral Duct Elbow (Galvanized Steel)
Galvanized steel spiral duct elbow is a standard round HVAC duct bend for ventilation pipeline direction transition. Manufactured from durable anti-corrosion galvanized steel, this duct elbow features streamlined curvature for low-resistance airflow and minimal pressure drop. Equipped with optional rubber sealing gasket for enhanced airtightness, it effectively prevents duct air leakage. Supporting multi-angle custom options and full standard diameter sizes, the slip-fit elbow ensures easy installation and perfect compatibility with all spiral duct systems. Ideal for commercial buildings, industrial ventilation, air conditioning and fresh air exhaust system piping projects.
Product Description
The 90° Spiral Duct Elbow is a key fitting designed for connecting spiral ducts in HVAC ventilation systems. Manufactured from high-quality galvanized steel, it provides smooth airflow direction changes while maintaining low resistance and high durability.
The elbow is equipped with a factory-installed rubber gasket (optional), ensuring airtight connections and reducing air leakage during operation. It is widely used in commercial, industrial, and residential ventilation systems.
Multiple angle options including 15°, 30°, 45°, 60°, and 90° are available to meet different installation requirements.
Key Features
- High-Quality Material Made from galvanized steel for corrosion resistance and long service life
- Airtight Connection Optional rubber gasket ensures tight sealing and reduced leakage
- Smooth Airflow Design Optimized curvature minimizes pressure loss and turbulence
- Multiple Angle Options Available in 15°, 30°, 45°, 60°, and 90°
- Standardized Sizes Compatible with standard spiral duct systems
- Easy Installation Slip-fit connection for fast on-site assembly
Applications
- HVAC ventilation systems
- Commercial buildings (shopping malls, offices, hotels)
- Industrial ventilation systems
- Air conditioning duct systems
- Exhaust and fresh air systems
Technical Specifications
| Parameter | Value |
| Material | Galvanized Steel |
| Thickness | 0.5 mm |
| Connection Type | Slip Fit / Male End |
| Angle Options | 15° / 30° / 45° / 60° / 90° |
| Diameter Range | Ø80 – Ø315 mm |
| Gasket | Optional (Rubber Seal) |
| Surface Treatment | Zinc Coated |
Size Range (Example)
| Size (mm) | Inner Diameter ØD (mm) | Radius R (mm) | Height H (mm) |
| 80 | 78.8 | 80 | 40 |
| 100 | 98.8 | 100 | 40 |
| 125 | 123.8 | 125 | 40 |
| 150 | 148.7 | 150 | 40 |
| 160 | 158.7 | 160 | 40 |
| 180 | 178.6 | 180 | 40 |
| 200 | 198.6 | 200 | 40 |
| 250 | 248.5 | 250 | 40 |
| 315 | 315 | 315 | 60 |
