Duplex 2205 Buttweld Pipe Fittings ASTM A815 UNS S32205 Eccentric Reducer
ASTM A815 Duplex 2205 / UNS S32205 Buttwelding Duplex Steel Eccentric Reducer
Duplex Steel S32205, also known as Duplex 2205, is a stainless steel alloy that combines both austenitic and ferritic properties, making it versatile for various applications. An eccentric reducer is a type of fitting used in piping systems to connect two pipes of different diameters. Unlike concentric reducers, which have a symmetrical shape, eccentric reducers have one side flat, allowing for better drainage and a more streamlined flow in certain applications. They are commonly produced in sizes ranging from 3/4 inch to 24 inches in diameter with wall thickness available from Sch 10 to Sch 160.
Concentric Reducer vs. Eccentric Reducer
| Shape and Design |
Concentric Reducer: Shape: Both ends are centered on the same axis. It transitions uniformly from a larger to a smaller diameter. Use: Commonly used in systems where the flow direction is maintained and space allows for the circular shape.
Eccentric Reducer: Shape: One end is off-center, creating a sloped angle between the larger and smaller diameters. Use: Often used in horizontal piping systems where the top of the pipe is critical for flow (like drainage) or to prevent air pockets. |
| Flow Characteristics |
Concentric Reducer: Reduces flow with a smooth transition, minimizing turbulence.
Eccentric Reducer: Can create situations where liquid flow is disrupted if not properly installed, but allows for better drainage and air elimination. |
| Application |
Concentric Reducer: Best for vertical applications or where the flow is not likely to trap air. Ideal for fluid transport where maintaining a consistent flow path is needed.
Eccentric Reducer: Used when transitioning between horizontal and vertical pipes to avoid trapping air. Helps maintain a constant flow in horizontally oriented piping systems. |
Duplex 2205 Fittings Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| ASTM A815 | 1.4462 | S32205 |
Duplex 2205 Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15% |
Advantages of Duplex S32205 Eccentric Reducer
- Mechanical Strength: Provides excellent strength, making it ideal for high-pressure applications.
- Versatile Applications: Suitable for oil and gas, chemical processing, and marine applications.
- Cost-Effective: Thinner walls compared to standard grades can reduce raw material costs.
- Ease of Welding: Can be welded using standard methods, but requires proper techniques to maintain integrity.
PT TEST
Application
- Oil and Gas Industry: Used in piping systems that transport aggressive media.
- Chemical Processing: Ideal for handling chemicals due to its excellent corrosion resistance.
- Marine Applications: Beneficial in marine environments because of its resistance to chloride stress corrosion.
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