Ductile Iron Double Flanged Short Radius 90° Bend
In demanding pipeline systems involving slurry, abrasive media, or high-pressure water, a reliable and robust direction change is paramount. The Ductile Iron Double Flanged Short Radius 90° Bend is engineered specifically for these challenging applications. Often referred to as a Double Flanged 90 Degree Duckfoot Bend Ductile Iron Pipe Fittings or a Ductile Iron Double Flanged 90° Duckfoot Elbow, this fitting provides a compact and efficient 90-degree turn. Its distinctive "duckfoot" or boot-shaped design offers superior flow characteristics and erosion resistance compared to standard elbows, making it ideal for handling materials that cause rapid wear in other components. The double-flanged configuration on both ends ensures a secure, bolt-on connection to adjacent piping, facilitating easy installation, maintenance, and providing a leak-proof seal under substantial pressure. This design is a critical component in mining, dredging, industrial process lines, and wastewater management, where durability and longevity are non-negotiable. You may also find this essential fitting cataloged under the name Double Duck Foot Flanged Bend.
The superior performance of the Ductile Iron Double Flanged Short Radius 90° Bend stems from its material composition and precise engineering. Manufactured from high-grade ductile iron (also known as nodular iron), this bend combines the strength of cast iron with remarkable flexibility and impact resistance. The material's inherent toughness makes it highly resistant to mechanical stress, pressure surges, and the abrasive action of solid particles within the flow. A key feature is its short-radius centerline, which allows for a more space-efficient installation in tight layouts while maintaining a smooth, optimized flow path that minimizes turbulence, pressure drop, and the potential for material buildup or clogging. The flanges are precision-machined to industry standards, ensuring perfect alignment and a flat, even sealing surface for the gasket. This fitting is typically coated with a fusion-bonded epoxy (FBE) or similar protective layer to provide excellent corrosion resistance, extending its service life even in harsh or corrosive environments.
Key Specifications & Features
- Material: High-Quality Ductile Iron (ASTM A536)
- Design: Short Radius 90° Bend, Double Flanged
- Pressure Rating: Suitable for PN10, PN16, and Class 150/300 applications (varies by specification)
- Connection: ANSI/ASA or DIN Standard Flanges
- Coating: Standard Fusion Bonded Epoxy (FBE) or as requested
- Primary Advantage: Exceptional abrasion and erosion resistance
| Nominal Diameter (DN) | Approx. Centerline Radius (R) | Flange Standard (Typical) | Common Applications |
|---|---|---|---|
| DN 80 - DN 200 | 1.0 x DN | EN 1092-2, ANSI B16.1 | Slurry Transport, Sand & Gravel Lines |
| DN 250 - DN 500 | 1.0 x DN | EN 1092-2, ANSI B16.1 | Mining Tailings, Dredging, Industrial Process Piping |
| DN 600 - DN 800 | 1.0 x DN | EN 1092-2, ANSI B16.1 | Large-Scale Wastewater, Ash Handling, Power Plant Systems |
Detailed Technical Parameters
| Property | Specification / Value | Test Standard |
|---|---|---|
| Tensile Strength | ≥ 420 MPa | ASTM A536 |
| Yield Strength | ≥ 300 MPa | ASTM A536 |
| Elongation | ≥ 10% | ASTM A536 |
| Hardness | 130 - 180 HB | ASTM E10 |
| Flange Face Finish | Serrated (125-250 µin AARH) or Smooth | ASME B16.1 / EN 1092-2 |
| Coating Thickness (FBE) | 250 - 400 µm | ISO 21809-2 / AWWA C213 |
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