ASTM A312 TP304H Serrated Fin Tube For Heat Exchanger And Reactor Cooling

ASTM A312 Standard:
This specification covers seamless, welded, and heavily cold-worked austenitic stainless steel pipes designed for high-temperature service and corrosive environments. It ensures the tube meets stringent mechanical and chemical properties for reliability in demanding applications.

• Material: TP304H Stainless Steel:
• Grade: TP304H is a high-carbon variant of 304 stainless steel. The "H" denotes elevated carbon content (0.04–0.10%), enhancing high-temperature creep resistance and strength.
• Properties: Excellent corrosion resistance, oxidation resistance, and durability under cyclic thermal conditions, making it ideal for temperatures above 525°C (977°F).

Serrated Fin Design:

Structure: Fins are mechanically attached (typically welded, extruded, or embedded) to the tube's exterior, featuring notched or serrated edges.

Function: The serrations disrupt fluid flow, creating turbulence that improves heat transfer efficiency by thinning the thermal boundary layer. They also reduce fouling by minimizing particulate buildup.

Advantages:

Enhanced Heat Transfer: Increased surface area and turbulence boost thermal efficiency.

High-Temperature Performance: TP304H’s composition ensures stability in extreme heat.

Durability: Resists corrosion and mechanical degradation in harsh environments.

Applications:

1. Power Generation

• Boilers & Superheaters: Used in coal-fired, gas-fired, or biomass power plants to transfer heat from combustion gases to water/steam. TP304H’s high-temperature strength (up to 800°C) resists creep and oxidation, while serrated fins maximize heat recovery from flue gases. Typical Operating Conditions: 540–620°C (1000–1150°F), high-pressure steam environments.
• Economizers: Recovers waste heat from exhaust gases to preheat boiler feedwater. Serrations enhance turbulence, improving thermal efficiency in low-temperature zones (200–400°C).
• Heat Recovery Steam Generators (HRSG): Integral in combined-cycle power plants, transferring heat from gas turbine exhaust to generate steam. TP304H resists sulfurous exhaust corrosion.

2. Petrochemical & Refining

• Process Heaters/Furnaces: Heats hydrocarbons in cracking units or reformers. Serrated fins withstand coking (carbon deposits) and thermal cycling, while TP304H resists sulfidation and chloride stress corrosion.
• Waste Heat Recovery Systems: Recovers energy from high-temperature process streams (e.g., refinery flue gases) to preheat feedstocks or generate steam.

3. Chemical Processing

• Acid Gas Heat Exchangers: Handles corrosive media (e.g., sulfuric acid, chlorine) in sulfuric acid plants or chlor-alkali units. TP304H’s chromium-nickel content provides pitting and crevice corrosion resistance.
• Reactor Cooling/Heating Coils: Maintains precise temperatures in exothermic/endothermic reactions. Serrated fins ensure rapid heat exchange in aggressive chemical environments.

ASTM A312 TP304H Fin Tube

Heat Exchanger Serrated Fin Tube

Boiler Serrated Fin Tube

ASTM A312 TP304H Serrated Fin Tube For Heat Exchanger And Reactor Cooling Images