YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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Studded Tubes ASTM A213 T9 Used In Power Plant
ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, T9, TP304, etc.
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | V |
| T9 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.025-1.00 | 8.00-10.00 | 0.90-1.10 | ... | ... |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| T9 | 60ksi (415 MPa) | 30ksi (205 MPa) |
Studded Tubes
The nail head tube ( studded fin tube) is also called nail like ribbed tube. They feature studs (small protrusions) welded or attached to the outer surface of the base tube, which increase the surface area and improve thermal performance. These tubes are commonly used in applications where high heat transfer rates are required, particularly in harsh or high-temperature environments
Design Features
Improved Heat Transfer: The studs create turbulence in the fluid flow, which enhances heat transfer efficiency by breaking up the boundary layer and promoting better thermal exchange.
Robust Construction: Studded fin tubes are typically made from durable materials like carbon steel, stainless steel, or alloy steels, making them suitable for high-temperature and high-pressure environments.
Advantages of Studded Tubes
High Heat Transfer Efficiency: The studs significantly improve heat transfer rates compared to plain tubes.
Provides high heat transfer in a relatively compact space, making it ideal for applications with space constraints.
Corrosion resistance, wear resistance, low contact thermal resistance, high stability.
The robust construction makes them suitable for harsh operating conditions, including high temperatures and pressures, corrosive environments.
Application
Power Plants:Employed in economizers, air preheaters, and superheaters to enhance heat exchange in power generation processes.
Petrochemical and Refining Industries:Utilized in heat exchangers for processing high-temperature fluids and gases.
Marine and Offshore Applications:Used in heat exchangers for engines and other equipment exposed to harsh marine environments.
Industrial Heating Systems:Used in thermal oil heaters, steam generators, and other industrial heating systems.
Waste Heat Recovery Systems: Used in boilers, furnaces, and exhaust systems to recover heat from hot gases and improve energy efficiency.
