ASTM A213 T5 Embedded G Type Fin Tube For Condensers Evaporators

The A213 T5 Embedded Fin Tube is a high-performance heat transfer component designed for demanding industrial applications. Below is a detailed, technical description of its specifications, design, and use cases:

1. Base Tube Material: ASTM A213 T5

Alloy Composition: Chromium-molybdenum (5Cr-0.5Mo) steel, compliant with ASTM A213 T5 standards.

Key Properties:

High-Temperature Strength: Retains mechanical integrity at temperatures up to 600°C (1,112°F).

Corrosion/Oxidation Resistance: Chromium content provides resistance to scaling and oxidation in steam/high-heat environments.

Seamless Construction: Manufactured without welds, ensuring reliability under high-pressure conditions (common in boilers and superheaters).

2. Embedded Fin Design

Construction Process:

Grooving: Precision-machined helical or longitudinal grooves are cut into the outer surface of the base tube.

Fin Insertion: Metal fins (typically carbon steel, stainless steel, or alloy steel) are mechanically pressed or rolled into the grooves.

Bonding: The fins are cold-worked into the grooves, creating a tight mechanical bond without welding.

Geometry: Helical (spiral) or longitudinal (straight) fins; serrated fins for enhanced turbulence.

3. Key Features

Thermal Efficiency: Increased surface area (up to 10–15x bare tube) improves heat transfer rates in gas-to-liquid or liquid-to-liquid systems.

Ideal for applications with low-convection media (e.g., exhaust gases).

Mechanical Durability: Embedded fins resist loosening from thermal cycling or vibration.

No weld fatigue, making them suitable for high-temperature, high-stress environments.

Customization: Fins can be tailored in height, thickness, spacing, and material to optimize performance for specific loads (e.g., ash-laden flue gas, corrosive fluids).

4. Applications

Power Generation: Boilers, superheaters, economizers, and air preheaters.

Petrochemical: Heat recovery steam generators (HRSGs), reformers.

Industrial HVAC: Waste heat recovery from furnaces or kilns.

Marine/Offshore: Compact heat exchangers for engine cooling or fuel heating.

6. Advantages Over Welded/Extruded Fins

No Thermal Degradation: Cold-working preserves the base tube’s metallurgical properties.

Lower Fouling Risk: Smooth groove-to-fin interface minimizes ash/debris buildup.

Cost-Effective: Longer service life in harsh conditions reduces maintenance costs.

7. Standards & Certifications

Complies with ASME Section I (power boilers) and Section VIII (pressure vessels).

Testing: Hydrostatic testing, non-destructive testing (NDT), and fin bond strength verification per manufacturer protocols.