
ASTM A213 T9 Alloy Steel Studded Fin Pipe 13Cr Stud
Tube Length: Customizable
Material: Alloy Steel
Fin Spacing: Customized
Tube Connector: HFW
Fin Dia: 12.7mm
Finned Type: Studded
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ASTM A213 T9 Alloy Steel Studded Fin Pipe, 13Cr Stud for Power Plant
Application in Boiler Systems for Steam Generation
Role: Boilers are the heart of power plants, where water is heated to create steam, driving turbines to generate electricity. The ASTM A213 T9 studded fin pipes are used in boiler walls, economizers, and superheaters, where they efficiently transfer heat from combustion gases to the water or steam within.
Benefit: The T9 alloy's high-temperature resistance allows it to perform reliably even at temperatures exceeding 500°C, which is essential for consistent and efficient steam generation.
Enhanced Heat Transfer with Studded Fins
Design Purpose: The studded fins welded onto the pipe significantly increase the surface area, allowing for better heat absorption and faster transfer of heat from combustion gases to the water within the boiler.
Energy Efficiency: With more efficient heat transfer, less fuel is required to reach the desired temperatures, improving overall thermal efficiency in the power plant. This results in lower operating costs and reduced fuel consumption, both critical for maximizing power plant efficiency.
Durability and Resistance to High-Temperature Corrosion with 13Cr Studs
Harsh Conditions: Power plants operate in extreme conditions with high pressures, temperatures, and exposure to corrosive substances like sulfur and other exhaust gases from the combustion process.
Advantage of 13Cr Studs: The 13% chromium content in the studs gives them excellent corrosion resistance, preventing oxidation and scaling in high-temperature, corrosive environments. This is particularly beneficial in maintaining the long-term performance of boiler and heat exchanger components in the power plant.
Applications in Heat Recovery Steam Generators (HRSG)
Role: In combined-cycle power plants, HRSG units capture waste heat from gas turbines to produce steam, improving the plant's efficiency. ASTM A213 T9 studded fin pipes are used in these systems to optimize heat recovery.
Benefit: The finned design enables efficient heat exchange from the exhaust gases to the steam generation system, maximizing energy recovery and reducing fuel costs.
Use in Economizers and Air Preheaters
Economizers: These pipes are used in economizers to preheat the boiler feedwater using residual heat from the exhaust gases. This helps reduce the thermal shock to the boiler and improves overall system efficiency.
Air Preheaters: In some power plants, studded fin pipes also preheat incoming combustion air, making fuel combustion more efficient and lowering emissions.
Benefit: By recovering and reusing waste heat, these systems further contribute to lowering fuel consumption and improving the efficiency of the power generation process.
Material Specification
Base Tube Material:
Standard: ASTM A213
Grade: T9 Alloy Steel
Type: Seamless ferritic alloy steel
Applications: Used in high-temperature services, including heat exchangers and boiler systems.
Stud Material:
Material: 13Cr (13% Chromium)
Purpose: Improves heat transfer and resists oxidation and corrosion at elevated temperatures.
Chemical Composition
ASTM A213 T9 Base Tube:
| BASE TUBE ASTM A213 T9 FIN PIPE Chemical Composition | |||||||
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Molybdenum (Mo) |
|
ASTM A213 T9 |
0.08 – 0.18 | 0.30 – 0.60 | ≤ 0.025 | ≤ 0.025 | 0.50 – 1.00 | 8.00 – 10.00 | 0.90 – 1.10 |
13Cr Studs:
| STUDS 13Cr Chemical Composition | ||||||
| Element | Carbon (C) | Manganese (Mn) | Chromium (Cr) | Silicon (Si) | Phosphorus (P) | Sulfur (S) |
| 13Cr Studs | ≤ 0.20 | ≤ 1.00 | 12.00 – 14.00 | ≤ 1.00 | ≤ 0.030 | ≤ 0.030 |
Mechanical Properties
| BASE TUBE ASTM A213 T9 FIN PIPE Mechanical Properties | ||||
| Property | Tensile Strength | Yield Strength | Elongation | Hardness |
| ASTM A213 T9 | ≥ 415 MPa | ≥ 205 MPa | ≥ 20% | ≤ 163 HB |
Studs 13cr Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Hardness |
| 13Cr Studs | ≥ 485 MPa | ≥ 275 MPa | ≥ 15% | ≤ 217 HB |
GNEE A213/SA213 T9 Alloy Steel Studded Fin Pipe with 13Cr Studs



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