Embedded Finned Tubes - ASTM A179 Carbon Steel Base Tube with Carbon Steel Fins

1. Product Introduction: Embedded Finned Tubes

Embedded finned tubes combine an ASTM A179 seamless carbon steel base tube with carbon steel fins using a pressure-embedding process. This design increases surface area by 8–12x versus bare tubes, enhancing heat transfer efficiency by 40–60% in applications like boilers, air preheaters, and thermal oil systems. Our tubes operate at temperatures up to 450°C and pressures ≤6.5 MPa.

2. Structure & Manufacturing Process

3. Material Chemical Composition (ASTM Standards)

Base Tube (ASTM A179):

Fins (Carbon Steel):

4. Dimensional Tolerances

5. Performance Advantages

• Corrosion Resistance: CS fins protect base tubes in flue gas (SO₂ ≤ 500 ppm) and humid environments.

• Thermal Efficiency: Fin-to-tube bond eliminates air gaps, achieving thermal conductivity of 45–50 W/m·K.

• Mechanical Durability: Withstands 30+ years of thermal cycling; fin pull-off force >60 N/mm.

• Fouling Resistance: Helical fin design reduces ash/sediment buildup by 35% vs. spiral fins.

6. Application Areas

• Energy & Power: Boilers (waste heat recovery), air preheaters, economizers.

• Petrochemical: Thermal oil heaters, reformers, hydrogen plants.

• HVAC: Industrial air dryers, heat recovery ventilators.

• Marine: Exhaust gas boilers, fuel oil heaters.

7. Why Choose Our Finned Tubes?

• 25+ Years of Expertise: 500+ projects delivered globally (EU, MENA, ASEAN).

• Certified Quality: ISO 9001, ASME Section II compliance; hydrostatic tested at 1.5x design pressure.

• Custom Solutions: Tailor fin density, tube length, and alloy combinations (e.g., SS304 fins for corrosive media).

• Lifetime Support: Technical consultancy + non-destructive testing (NDT) reports provided.