The connection method of high-frequency welded spiral fin tubes is usually flange or thread connection. This connection method not only improves production efficiency, but also reduces costs, while ensuring the durability and reliability of the product. ‌In addition, ‌high-frequency welding spiral fin tube has high production efficiency, ‌low cost, ‌durable, ‌reliable welding, ‌high heat conduction output power, ‌is an ideal heat transfer element. ‌

High frequency welded fin tube is also known as high frequency welded spiral finned tube, high frequency welded spiral finned tube is a tubular high-efficiency heat transfer element with spiral fins. The extended surfaces (fins) can be solid or serrated and have up to tens of times more heat transfer area than a bare tube.

The spiral fin tube itself is an efficient heat transfer element with spiral fins. Its heat transfer area is several to dozens of times that of the light tube. It can enhance heat transfer, reduce flow resistance, and reduce metal consumption. quantity, thereby improving the economy and operational reliability of heat exchange equipment.

Manufacturing Process:
HFW Fin Tube is a spiral winding of steel fins, which is continuously welded on the steel pipe by high frequency resistance welding (HFERW). A high-frequency current is introduced into the workpiece, the welding contact surface is melted or semi-melted by resistance heat, and then appropriate pressure is applied to the welding contact surface to complete the welding of the finned tube.

Quality Control for HFW Fin Tube
The quality of the HFW Fin Tube is assured by hydrostatic or pneumatic testing, eddy current testing and tensile testing to verify the mechanical bond between the inner tube and the outer fins

Delivery conditions
Burr-free, dry and blow-out inside, HFW Fin Tube with varnish on both ends.

Features of HFW Fin Tube
1. Due to the fast welding speed and strong self-cooling effect of the weldment, not only the heat affected zone is small, but also oxidation is not easy to occur, so the structure and performance of the weld are very good.
2. Anti-corrosion performance, wear-resistant performance, low contact thermal resistance, high stability, and anti-fouling ability.
3. Large heat exchange area.

Application
HFW Fin Tube (high frequency welded spiral finned tube) is one of the most widely used spiral finned tubes, and is now widely used in power, metallurgy, waste heat recovery in cement industry, petrochemical industry and other industries.

Additional Info
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required

Noted:

1) Supply raw material certificate, quality guarantee, Mill Test Certificate

2 ) Three Inspection : raw material ,pressure,measurement of size , package and finishing

3) Warranty period: within one year after receipt of the goods

4) Packing with Plastic Mat, Waterproof Paper , drying agent/desiccant and plastic cap

For light ,short fin tubes ,we use exporting wooden case

For heavy, long fin tubes ,we use iron frame wooden case

On the top of the package ,we weld more square steel to protect the package

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