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Nickel Alloy U Return Bend Tube ASTM B366 UNS N08810 For Power Generation
A U-return bend tube is a type of pipe fitting used to change the direction of fluid flow in a pipeline by 180 degrees. It is named for its U-shaped configuration, which allows it to make a complete turn in the flow direction. These bends are essential in various industrial applications, including heat exchangers, condensers, chemical and petrochemical plants, oil and gas pipelines, and power generation systems.
Key points about U-return bend tubes:
Design and Function: The U-return bend tube is designed to reverse the flow of fluids or gases, making it a crucial component in systems where space is limited and a 180-degree turn is required.
Materials: U-return bends can be made from various materials, including carbon steel, stainless steel, and other alloys, depending on the specific requirements of the application, such as corrosion resistance and temperature tolerance.
Manufacturing: The bending process involves using mechanical force to shape the tube into a U-shape without collapsing the tube's cross-section. This can be done using various bending techniques, such as press bending, rotary draw bending, or mandrel bending.
Advantages: U-return bends help in minimizing the overall length of the system, provide uniform flow distribution, and reduce pressure drop, making them efficient for use in complex piping systems.
Advantages: U-return bends help in minimizing the overall length of the system, provide uniform flow distribution, and reduce pressure drop, making them efficient for use in complex piping systems.
Detailes of ASTM B366 UNS N08810 / 800H
ASTM B366 This specification covers wrought welding fittings for pressure piping, factory-made from nickel and nickel alloys. Threaded fittings as covered in ASME B16.11 are also covered by thisspecification. The term welding applies to butt-welding or socket-welding parts such as 45 and 90° elbows, 180° bends, caps, tees, reducers, lap-joint stub ends, and other types, as covered by ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95, and MSS SP-97.
Chemical Composition (%)
UNS | Ni | Cu | Fe | Mn | C | Si | S | Cr | Al | Ti |
N08810 | 30.0-35.0 | 0.30-0.60 | 39.5min | 1.5 | 0.05-0.10 | 1.0 | 0.015 | 19.0-23.0 | 0.15-0.60 | 0.15-0.60 |
Mechanical Properties
Heat Treatment | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
2100-2150 °F (1147-1177 ℃) | 60-85ksi (415-585 MPa) | 30ksi (205 MPa) |
Heat treatment is highly dependent on intended service temperature.