Overview
Alloy steel High Frequency Welded (HFW) fin tubes are commonly used in various industrial applications where heat transfer efficiency and corrosion resistance are crucial. These tubes are constructed by welding fins onto a base tube, typically using a high-frequency welding process.
High Frequency Welded (HFW) fins are commonly used in the manufacturing of finned tubes. These fins are created by welding a strip of material onto a base tube using a high-frequency welding process. The high-frequency welding method offers several advantages, including:
High Frequency Welded Finned Tube Reference
Fin Type | Base Pipe Material | General Fin Material | Outside Diameter of Base Pipe | Fin Pitch | Fin Height | Fin Thickness |
---|---|---|---|---|---|---|
Frequency Welded (HFW) | Stainless steel Alloy steel Carbon steel | Stainless steel Alloy steel Carbon steel | 16-219MM | 3-25MM | 5-30MM | 0.8-3MM |
A335 P22 Chemical Composition
Grade | C | Mn | P | S | Si | Cr | Mo |
P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 |
A335 P22 Mechanical properties
Grade | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | Impact energy(J) | Hardness |
P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
P12 | ≥ 415 | ≥ 220 | ≥ 22 | ≥ 35 | ≤ 163HB |
P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 187HB |
P91 | 585~760 | ≥ 415 | ≥ 20 | ≥ 35 | ≤ 250HB |
P92 | ≥ 620 | ≥ 440 | ≥ 20 | ≥ 35 | 250HB |
Application
Heat Exchangers: HFW fin tubes are widely used in heat exchangers for applications such as HVAC systems, chemical processing, power generation, and refrigeration.
Boilers: These tubes are utilized in boilers for power plants, industrial facilities, and other applications where high-pressure and high-temperature conditions are present.
Oil and Gas Industry: HFW fin tubes are employed in oil refineries, petrochemical plants, and offshore platforms for heat recovery, process heating, and other thermal applications.
Air Conditioning and Refrigeration: These tubes are used in air conditioning units, refrigeration systems, and heat pumps to enhance heat transfer efficiency.
Automotive Industry: HFW fin tubes can be found in automotive radiators and heat exchangers to manage engine temperatures effectively.
Chemical Processing: Industries such as pharmaceuticals, food processing, and specialty chemicals utilize HFW fin tubes for precise temperature control and efficient heat exchange.
Power Generation: In power plants, these tubes are used in condensers, heat recovery steam generators (HRSGs), and other heat transfer systems.
Renewable Energy: HFW fin tubes play a role in renewable energy applications like solar thermal systems for efficient heat collection and transfer.