component：base tube，fins

Carbon steel series (most commonly used)

Base pipe: 20#, Q235B, 16Mn, 20G

Fin strip: 08F, Q235, SPCC



Stainless steel series (corrosion-resistant/high-temperature)

Base tube: 304,304L,316,316L,2205

Fin strip: same material as stainless steel strip

Alloy steel / Special materials  12Cr1MoV、T5、T91



Outer diameter of basal tube (common)

Φ16、Φ19、Φ22、Φ25、Φ28、Φ32、Φ38、Φ42、Φ45、Φ51、Φ57、Φ60、Φ76、Φ89



fin parameter

fin thickness δ

Conventional: 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm



Fin height h

8mm、10mm、12.7mm、16mm、18mm、20mm、25mm

2.0mm、2.5mm、3.0mm、3.5mm、4.0mm、5.0mm、6.0mm、8.0mm



length L

500～12000mm



The metal fins are precisely wound around the outer wall of the base tube.

A high-energy-density laser beam (with a diameter of only 0.2–0.6 mm) is emitted using a fiber laser.

The root of the fin and the base tube surface are instantly melted, forming a continuous and extremely narrow metallurgical weld under argon gas protection.

The entire process is controlled by a numerical control system to ensure a positioning accuracy of **±0.1mm**.