ASTM A312 TP347H HFW Serrated Finned Tube and SS Fins For Waste Heat Recovery Units

ASTM A312 TP347H HFW Serrated Finned Tube and SS Fins For Waste Heat Recovery Units

The ASTM A312 TP347H HFW Serrated Finned Tube represents the pinnacle of heat exchanger technology, combining high-strength stabilized

stainless steel with an advanced fin design to maximize thermal efficiency. This product is specifically engineered for demanding high-temperature applications where corrosion resistance, durability, and superior heat transfer are non-negotiable.

Utilizing High-Frequency Welding (HFW) technology, this tube integrates a stainless steel serrated fin onto a TP347H base tube. The result is a robust, high-performance component ideal for critical environments such as petrochemical furnaces, power generation boilers, and waste heat recovery units.

Here are some detailed breakdowns:

1. Base Tube: ASTM A312 TP347H

Chemical Composition (wt%, ASTM A312 Standard)

Mechanical Properties (Solution Annealed Condition)

2. Finned Type: HFW Serrated

Unlike solid continuous fins, serrated fins feature notches or segments cut into the fin strip before welding. This creates a "toothed" edge along the fin's surface

Function: This design serves two main purposes:

• Enhanced Heat Transfer: The serrations disrupt the boundary layer of air or gas flowing across the tube. By breaking up laminar flow and inducing turbulence, they significantly increase the convective heat transfer coefficient.
• Reduced Fouling: The segmented design allows for "self-cleaning" properties, preventing the buildup of dust, soot, or particulates that typically accumulate on solid fins

3. Fin’s Material: SS stainless steel

Benefit: Stainless steel fins maintain their structural integrity and oxidation resistance even when exposed to high exhaust gas temperatures or corrosive atmospheres.

4. Key Features & Benefits

5. Applications

Due to its robust construction and high-temperature material properties, this product is best suited for:

• Fired Heaters & Furnaces: Specifically in the convection section where heat is recovered from flue gases.
• Steam Superheaters & Reheaters: In power plants and combined cycle facilities.
• Hydrocarbon Processing: Crude oil heaters, reformer furnaces, and hydrotreater units in refineries.
• Waste Heat Recovery Units (WHRU): Capturing energy from gas turbine exhaust or industrial process off-gases