ASTM A106 Gr. B Carbon Steel High Frequency Welded Spiral Fin Tube

ASTM A106 Gr. B Carbon Steel High Frequency Welded /HFW Spiral Fin Tube

High frequency welded / HFW finned tubes are used to heat the steel strip and the outer surface of the steel tube until the plastic state or melting by using the skin effect and proximity effect of the high-frequency current while the steel strip is wound around the steel tube, and the welding is completed under a certain pressure when the steel strip is wound. This kind of high-frequency welding is actually a solid phase welding. Compared with inlaying, brazing (or overall hot galvanizing) and other methods, it is good in terms of product quality (high welding rate of fins, up to 95%), productivity and automation. High frequency current is adopted, and winding is carried out at the same time

Technical Details/Base Tube Details

Tube Diameter : 20 mm OD Min to 219 mm OD Max.

Tube Thickness : Minimum 2 mm up to 16mm

Tube Material : Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, duplex Steel, Super Duplex Steel, Inconel, High Chrome High Nickle & Incolloy, CK 20 material and some other material.

Fin Details

Fins Thickness : Min. 0.8 mm to Max. 4 mm

Fins Height : Min 0.25” (6.35 mm) To Max.1.5” (38 mm)

Fin Density : Min 43 Fins Per Meter To Max. 287 Fins Per Meter

Material : Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, Duplex Steel and Incolloy.

For a rapid quotation, plz send with following requirement:

Number of pieces,

base tube: Diameter, thickness, length and material specification.

Fins: material specification, type (solid or serrated), height, thickness, spacing, finned length and unfinned sections. Weld prep details if required.

Delivery period required.

Advantages of high-frequency welded finned tubes

1. The installation is simple and economical. The length of high-frequency welding spiral finned tube can reach 6m, reducing the connection points, making the installation economical and fast, and reducing the probability of water leakage at the connection.

2. The maintenance is simple. After the installation of high-frequency welding spiral finned tube, the maintenance is basically unnecessary.

3. High efficiency. High frequency welding of spiral finned tube is the full contact welding between fins and steel pipes. The heat dissipation area is more than 8 times that of smooth tube. The internal is smooth and the internal water flow resistance is small.

4. Long service life, high mechanical strength of the combination of fins and pipes, and tensile strength of more than 200Mpa. The inside and outside of the pipes are all hot-dip galvanized.

Application of Finned Tube in Industries

• Petroleum Industry
• Chemical industry
• Wood industry
• Food industry
• Steel Industry
• Plastic molding industry
• Glycol dehydration units
• Coils for hybrid cooling towers
• Printing Machines
• Production of surface coatings
• Solvent recovery
• Cooling of turbine air intakes
• Textile production
• Greenhouse heaters and breeding
• Tanneries
• Anti-freeze coils for process air
• Paper works