Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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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.
