1. What is ASTM A179 Embedded Fin Tube?
ASTM A179 Embedded Fin Tube is a high-efficiency heat transfer solution designed for moderate-temperature non-corrosive services. It features a seamless low-carbon steel base tube (ASTM A179) with spiral aluminum fins mechanically embedded into precision-grooved surfaces. This interlocking technology achieves 100% metallurgical contact, eliminating thermal resistance while providing 30% higher heat transfer efficiency than L-fin tubes in economizers, air preheaters, and thermal oil systems up to 260°C (500°F).
2. Chemical & Mechanical Properties
Dimensional Specifications:
| Bare Tube Diameter:16-63mm |
| Fin Height::<17mm | Fin Thickness: ~0.4mm | Fin Pitch: 2.1-5mm | Tube Ends: Plain Ends / Beveled Ends |
| No Fin Area (Both Ends): As Customer’s Request and Drawing |
Chemical Composition (%)
| ASTM A179 Chemical Composition(%) |
| Element | C | Si | P | Mn | S |
| Range | ≤ 0.06 | ≥ 0.10 | ≤ 0.035 | 0.27–0.63 | ≤0.035 |
Mechanical Properties
| ASTM A179 Mechanical Properties |
| Tensile Strength | Yield Strength | Elongation | Hardness | Max Service Temp. |
| ≥325 MPa | ≥180MPa | ≥35% | ≤ 72HB | 260°C (500°F) |
3. Key Applications & Competitive Advantages
● Power Plant Economizers: Flue gas heat recovery in coal/gas boilers.
● HVAC Systems: Industrial air heating coils for commercial buildings.
● Thermal Oil Circuits: Heat exchangers in hydraulic systems.
● Biomass Boilers: Low-pressure evaporator bundles.
● Food Processing: Conveyor belt dryers (FDA-compliant surface).
4.Why choose ASTM A179 Embedded Fin Tube:
A:Company Competitiveness:
Yuhong Holding Group has more than 35 years experience for steel pipe and tube , fin tube , main application for Petrochemical , Oil refinary, Furnace, heating, boiler, heat exchanger, air cooler,.., till now YUHONG brand products already exported more than 85 countries, which like UK, ITALY, SPAIN , USA, MEXICO , COLOMBIA , BRAZIL, SAUDI ARANBIA , OMAN, QATAR, U.A.E, KOREA, ...., YUHONG brand already won good reputation in the market.
B:Product Competitiveness:
● 40% Cost Saving: Most economical vs. stainless/bimetallic tubes.
● Zero Fin Loosening: Embedded design withstands 50,000+ vibration cycles (TEMA Class R).
● Low Maintenance: Smooth fins reduce fouling by 40% (ASHRAE Research).
● Rapid Delivery: 150+ standard sizes (OD 19–76mm) in stock.
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ASTM A179 G Type Embedded Fin Tube for Heat Exchangers Images
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