Types and materials of high-frequency welded spiral finned tubes

Mar 23, 2024

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High frequency welded finned tube is an efficient heat dissipation element that improves the shortcomings of radiators made of series and wound fins. The finned tube itself is wrapped with 0.8-1mm thick strip steel on the finned tube, and high-frequency welding technology is used to weld the fins firmly on the tube, ensuring the bonding strength between the tube and fins. Its metal thermal strength has reached 1.10-1.20w/kg ℃. This finned tube is widely used in the production of boiler economizers, air preheaters, and energy-saving radiators in factories and residential buildings, and is the preferred choice for later winding of heat pipes.

Spiral finned tube is an efficient heat transfer element. Its heat transfer area is several times to several tens of times that of a light tube, which can enhance heat transfer, reduce flow resistance, reduce metal consumption, and thus improve the economy and operational reliability of heat exchange equipment. At present, spiral finned tubes have been widely used in various boilers.

Types and materials of high-frequency welded spiral finned tubes

Traveling of weldable finned tubes: non toothed, toothed

Weldable materials: carbon steel, corrosion-resistant steel, stainless steel, alloy steel

Product application scope

Boiler economizer, power plant waste heat boiler, petrochemical engineering, various heat exchangers

Scope of production for high-frequency welded spiral finned tubes

Outer diameter mouth D of the base pipe: Ø 25- Ø 140 mm

Base pipe length L: 1-12 meters

Fin spacing t: 5-30 millimeters

Fin thickness Sn: 0.8-2.5 millimeters

Fin height hf: generally not exceeding the base tube radius (8-30 millimeters)

Cold rolled composite finned tube material