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ASTM A213 T22 HFW Serrated Finned Tube With Carbon Steel Fins For Furnace

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ASTM A213 T22 HFW Serrated Finned Tube With Carbon Steel Fins For Furnace

Brand Name : Yuhong

Model Number : ASTM A213 T22 HFW Serrated Finned Tube with C.S. Fins

Certification : ABS, BV, DNV, CCS, LR

Place of Origin : China

MOQ : 200~500 KGS

Price : Negotiable

Payment Terms : TT, LC

Supply Ability : According to Clients' requirements

Delivery Time : 60 Days (Depend on Customer's Requirements)

Packaging Details : Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps

Product Name : Serrated Finned Tube

Base Tube Specification&Material : ASTM A213 T22

Fin material : Carbon Steel

Fin Height : 0.375″ to 1.25″

Fin Segment Width : 5/32″ or 5/16″

Fin Thickness : 20ga (.035″) to 16ga (.060″)

Fin Pitch : 1 to 7 fins per inch

Base Tube O.D. : 1.00″ to 12.75″ outside diameter

Applications : Boilers & Superheaters; Economizers; Waste Heat Boilers; Fired Heaters; Air Preheaters...

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ASTM A213 T22 HFW Serrated Finned Tube With Carbon Steel Fins For Furnace

ASTM A213 T22 HFW Serrated Finned Tube with Carbon Steel Fins is a specialized type of heat exchanger tube designed for high-efficiency thermal transfer in boilers, superheaters, and other high-temperature/pressure applications. Here’s a detailed breakdown of its components and characteristics:

1. Base Tube Specifications

(1) Chemical Composition (Weight %)

Element ASTM A213 T22 Requirements Typical Values
Carbon (C) 0.05–0.15% 0.10%
Manganese (Mn) 0.30–0.60% 0.45%
Phosphorus (P) ≤ 0.025% 0.015%
Sulfur (S) ≤ 0.025% 0.010%
Silicon (Si) ≤ 0.50% 0.25%
Chromium (Cr) 1.90–2.60% 2.25%
Molybdenum (Mo) 0.87–1.13% 1.00%
Iron (Fe) Balance Balance

Notes:

Key Alloying Elements: Cr and Mo provide oxidation resistance and high-temperature strength.

Low S/P: Minimizes hot cracking during welding.

(2) Mechanical Properties

Property ASTM A213 T22 Requirements Typical Values
Tensile Strength ≥ 415 MPa (60 ksi) 450–550 MPa
Yield Strength (0.2% offset) ≥ 205 MPa (30 ksi) 240–300 MPa
Elongation (in 50 mm) ≥ 30% (for longitudinal) 35–40%
Hardness (Brinell) ≤ 163 HBW 140–160 HBW

Additional Requirements:

Heat Treatment:

T22 tubes are typically supplied in the normalized and tempered condition (e.g., 900–950°C normalized, 680–730°C tempered).

High-Temperature Performance:

Creep Strength: ~34 MPa at 600°C (1,112°F) for 100,000 hours.

Oxidation Resistance: Stable up to 580°C (1,076°F) in steam environments.

(3) Key Applications

  • Boiler Tubes: Superheaters, reheater tubes.
  • Heat Exchangers: Refineries, power plants.
  • Pressure Vessels: ASME SA-199 T22 for seamless pipes.

2. Fin Design

Fin Type: Serrated Fins

  • Structure: Fins are cut into discontinuous segments (serrations) to disrupt boundary layers, enhancing heat transfer by 20-30% compared to smooth fins.
  • Material: Carbon steel fins (typically ASTM A179 or A192 for compatibility with the base tube).

Key Benefits:

  • Turbulence generation for improved heat exchange.
  • Reduced fouling in dirty gas/fluid environments.

3. Comparison to Alternatives

Feature ASTM A213 T22 HFW Serrated Finned Tube Smooth-Finned Tube Extruded Finned Tube
Heat Transfer Highest (serrations create turbulence) Moderate High (but no serrations)
Cost Mid-range (HFW + carbon steel fins) Lowest Highest (extrusion process)
Durability Excellent (T22 + welded fins) Good Excellent (monolithic)

4. Key Considerations for Buyers

Fin Density: Typically 5-11 fins per inch (FPI), depending on gas flow requirements.

Corrosion Protection: Optional aluminization or ceramic coating for harsh environments.

Customization: Fin height, thickness, and serration pattern can be tailored


The ASTM A213 T22 HFW Serrated Finned Tube with Carbon Steel Fins is a high-performance heat transfer component designed for demanding industrial applications. Here’s a detailed breakdown of its key applications and advantages:

1.Primary Applications

A. Power Generation

  • Boilers & Superheaters:
    • Used in coal-fired, gas-fired, and biomass power plants to enhance heat recovery from flue gases.
    • Why T22? The 2.25% Cr-1% Mo alloy resists oxidation and creep at temperatures up to 580°C (1,076°F).
  • Economizers:
    • Preheats feedwater by recovering waste heat from exhaust gases, improving plant efficiency.

B. Oil & Gas/Petrochemical

  • Waste Heat Boilers:
    • Recovers energy from process gases (e.g., refinery catalytic crackers).
  • Fired Heaters:
    • Serrated fins disrupt boundary layers, reducing fouling in hydrocarbon processing.

C. Industrial Heat Exchangers

  • Air Preheaters:
    • Preheats combustion air using exhaust gases (common in cement/steel plants).
  • Process Heaters:
    • Transfers heat in chemical reactors or distillation columns.

D. HVAC & Energy Recovery

  • Heat Recovery Steam Generators (HRSGs):
  • Captures heat from gas turbine exhaust to produce steam.

2. Why Choose This Combination?

Feature Benefit
ASTM A213 T22 Base Tube High-temperature strength, corrosion resistance, and weldability.
HFW (High-Frequency Welded) Cost-effective for mass production; weld integrity comparable to seamless.
Serrated Carbon Steel Fins 20–30% higher heat transfer vs. smooth fins; resistant to thermal fatigue.
Carbon Steel Fins Economical, compatible with T22 base metal, and easily weldable.

ASTM A213 T22 HFW Serrated Finned Tube With Carbon Steel Fins For Furnace


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ASTM A213 T22 HFW Serrated Finned Tube With Carbon Steel Fins For Furnace Images

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