EN10217-7 1.4301（TP304）Stainless Steel Extruded Fin Tube For Air-cooled Exchangers

EN10217-7 1.4301 (TP304) Extruded Fin Tube

1.4301 (commonly known as TP304 or UNS S30400) is a classic austenitic stainless steel grade. Its fundamental characteristic is a balanced composition of Chromium (Cr) and Nickel (Ni), which provides excellent corrosion resistance, good formability, and ease of welding, establishing it as one of the most versatile and widely used stainless steels.

The EN10217-7 1.4301 Extruded Fin Tube is a specialized high-efficiency heat transfer component. According to the European Standard EN10217-7, which covers welded stainless steel tubes for pressure purposes, this tube is manufactured as a welded base tube with an integral, cold-extruded fin. This design dramatically increases the external surface area, making it exceptionally effective for heat exchange applications where space is limited or where maximizing heat transfer from a gas or fluid to the tube is critical.

Chemical Composition (%) - 1.4301/TP304

Mechanical Properties (Base Tube)

1.4301 Equivalent Material Grades

Applications of EN10217-7 1.4301 Extruded Fin Tubes

1.Waste Heat Recovery Systems: Used in economizers and gas-to-liquid heat exchangers to capture and reuse thermal energy from exhaust streams.

2. Air Cooled Heat Exchangers (ACHEs): Commonly employed in power plants, refineries, and chemical processing facilities where air is used as the cooling medium.

3. Deaerators and Feedwater Heaters: In power generation cycles to improve thermal efficiency.

4. HVAC&R Systems: Found in industrial heating, ventilation, air conditioning, and refrigeration units.

5. Process Gas Cooling: Efficiently cools process gases in various chemical and industrial plants.

Key Features & Advantages of EN10217-7 1.4301 Extruded Fin Tubes

1.Enhanced Heat Transfer: The extruded fin significantly increases the external surface area, leading to a substantial improvement in heat transfer efficiency compared to bare tubes.

2. Integral Fin Construction: The fin is formed from the base tube's own material, ensuring a seamless, metallurgically bonded interface with no risk of contact resistance or fin loosening.

3. Corrosion Resistance: Inherits the excellent general corrosion resistance of grade 1.4301/TP304, suitable for many atmospheric, aqueous, and chemical environments.

4. Strength and Durability: The cold-working during the fin extrusion process can work-harden the fin structure, enhancing its mechanical strength and rigidity.

5. Compact Design: Allows for more compact heat exchanger designs, as a smaller footprint can achieve the same thermal performance as a larger bank of bare tubes.