1. What is ASTM A179 Extruded Fin Tube?
ASTM A179 Extruded Fin Tube is a high-efficiency heat transfer solution for non-corrosive thermal applications. It features a seamless low-carbon steel base tube (ASTM A179) with integrally extruded aluminum fins metallurgically bonded through a high-pressure process. This monolithic structure eliminates interfacial resistance, achieving 98% thermal contact for 30% higher heat flux than welded fins in economizers, air heaters, and thermal oil systems up to 260°C (500°F).
2.Chemical & Mechanical Properties
Dimensional Specifications:
| Bare Tube Diameter:8-51mm |
| Fin Height:: <17mm | Fin Thick: 0.2mm-0.4mm | Fin Pitch: 1.6-10mm | Tube Ends: Plain Ends / Beveled Ends |
| No Fin Area (Both Ends): As Customer’s Request and Drawing |
Chemical Composition(A179 Material,%)
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
| Content (%) | ≤ 0.06 | 0.27 - 0.63 | ≤ 0.035 | ≤ 0.035 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness |
| Requirement | ≥ 325 | ≥ 180 | ≥ 35 | Typically ≤ 72 HRB |
3. Key Applications & Competitive Advantages
· Power Plant Economizers: Flue gas heat recovery in coal/gas boilers.
· HVAC Systems: Air heating coils for industrial ventilation.
· Thermal Oil Heaters: Secondary heat exchangers in hydraulic circuits.
· Biomass Boilers: Low-pressure evaporator bundles.
· Industrial Dryers: Conveyor belt dryers (food/paper processing).
4. Why Choose ASTM A179 Extruded Finned 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. bimetallic/SS tubes.
· Zero Fin Detachment: Metallurgical bond withstands thermal cycling.
· Easy Maintenance: Smooth fins resist fouling – 50% cleaner than L-fins.
· Rapid Delivery: 200+ standard sizes (OD 19–50mm) in stock.
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ASTM A179 Extruded Fin Tube For Oil Refineries and Chemical Processing Plants Images
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