ASTM A213 T9 Alloy Steel Studded Fin Pipe 13Cr Stud Radiant Coil

ASTM A213 T9 Alloy Steel Studded Fin Pipe with 13Cr Studs for Radiant Coil Applications

Studded fin pipes are widely used in radiant coils for high-temperature and high-pressure environments such as furnaces, heaters, and boilers. ASTM A213 T9 alloy steel with 13% chromium (13Cr) studs ensures excellent mechanical strength, thermal efficiency, and resistance to corrosion and oxidation, making it ideal for demanding applications.

1. 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.

2. Chemical Composition

ASTM A213 T9 Base Tube:

13Cr Studs:

3. Mechanical Properties

4. Features of Studded Fin Pipe

1. Enhanced Heat Transfer:

   • The 13Cr studs provide additional surface area, significantly improving heat transfer efficiency.
   • Suitable for radiant sections in furnaces where high thermal conductivity is crucial.

2. High-Temperature Resistance:

   • ASTM A213 T9 alloy steel withstands elevated temperatures up to 650°C.
   • 13Cr studs resist oxidation and scaling, even in aggressive environments.

3. Corrosion Resistance:

   • Chromium content in the base tube and studs enhances resistance to corrosion in harsh environments, including exposure to flue gases and combustion byproducts.

4. Durability:

   • Strong mechanical bonding between the base tube and studs ensures long-term performance under thermal cycling and vibration.

5. Applications

• Radiant Coils in Furnaces and Heaters:

  • Used in radiant sections to absorb heat from combustion gases and transfer it to process fluids.

• Boiler Systems:

  • Ideal for water tube boilers in power plants and refineries.

• Petrochemical and Refining Industries:

  • Commonly used in process heaters, reformers, and cracking furnaces.

• High-Temperature Heat Exchangers:

  • Suitable for heat recovery applications in industrial processes.

6. Advantages

• Energy Efficiency: Improves thermal efficiency by maximizing heat transfer in radiant sections.
• Longevity: Combines high-temperature resistance and corrosion resistance for long-term durability.
• Cost-Effective: Reduces downtime and maintenance costs by providing a reliable and robust heat exchange solution.
• Versatility: Suitable for various high-temperature industrial processes.