ASTM A312 TP347H High Frequency Spiral Welding Fin Tube For Exhaust Gas Boilers

The A312 TP347H High Frequency Spiral Welding Fin Tube is a specialized component designed for high-efficiency heat transfer in demanding environments. Here's a breakdown of its key applications and advantages:

Key Applications

Power Generation

• Boilers/Superheaters: Withstands high-pressure steam and temperatures (up to 750°C) in coal-fired, gas-fired, or biomass power plants.
• Economizers: Recovers waste heat from flue gases to preheat feedwater, improving plant efficiency.
• Heat Recovery Steam Generators (HRSG): Used in combined-cycle power plants for gas-to-steam heat exchange.

Petrochemical & Refining

• Furnace Convection Sections: Efficiently transfers heat in ethylene crackers or reformers.
• Process Gas Heaters/Coolers: Handles corrosive gases (e.g., sulfur compounds) at elevated temperatures.

Oil & Gas

• Heat Exchangers in Refineries: For crude oil preheating, distillation, or catalytic processes.
• Exhaust Gas Boilers (EGBs): Recovers heat from gas turbine exhaust in offshore platforms.

Waste Heat Recovery Systems

• Captures residual heat from industrial exhausts (e.g., cement kilns, steel mills) to generate steam or power.

Incinerators & Waste-to-Energy Plants

• Resists oxidation and corrosion from aggressive flue gases containing chlorides or acids.

HVAC & Industrial Heating

• High-efficiency air heaters, economizers, or process dryers requiring compact, corrosion-resistant designs.

Why TP347H?

• Material Properties:

1. ​​High-Temperature Strength: Stabilized with niobium (Nb) to resist creep and oxidation.
2. Corrosion Resistance: Excellent performance in acidic, chloride-rich, or sulfidizing environments.
3. Sensitization Resistance: Minimizes intergranular corrosion risk during welding or prolonged high-temp exposure.

• Grade	UNS Designation	C	Mn	P	S	Si	Cr	Ni
  TP347H	S34709	0.04–0.10	2	0.045	0.03	1	17.0–19.0	9.0–13.0

• Spiral Fin Design Advantages

1. Enhanced Surface Area: Improves heat transfer efficiency, especially for gases with low thermal conductivity.
2. Turbulence Induction: Spiral geometry disrupts laminar flow, boosting convective heat transfer.
3. Compact Design: Maximizes heat exchange in space-constrained installations.

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Industries Served

• Thermal power plants
• Petrochemical refineries
• Oil & gas processing
• Chemical manufacturing
• Waste management/incineration
• Industrial HVAC

This fin tube is ideal for applications demanding durability under thermal stress, corrosion resistance, and high heat-transfer efficiency. Its design and material make it a go-to solution for harsh, high-temperature environments.

ASTM A312 TP347H Fin Tube

High Frequency Spiral Welding Fin Tube

Exhaust Gas Boilers Fin Tube

ASTM A312 TP347H High Frequency Spiral Welding Fin Tube For Exhaust Gas Boilers Images