1. Long service life, more than three times that of wrapped welded finned steel pipes.
2. The root of the fin forms an arc cut with the tube, and the surface of the fin is smooth, completely eliminating the accumulation, blockage, and slagging phenomena caused by the folding of the fin root in other forms of finned tubes.
3. The use of hot rolling technology in production has improved the density, yield strength, tensile strength, and wear resistance of the metal structure.
4. Due to the integrated structure of fins and tubes and their spiral distribution, the pressure bearing capacity of integral spiral finned steel pipes is more than three times that of seamless steel pipes with equal wall thickness and inner diameter.
5. Wear resistance solves the problem of severe wear on the convective heating surface of coal-fired boilers due to high wind speed and high ash concentration. (Especially for circulating fluidized bed boilers)
6. The integrated structure of fins and tubes completely eliminates the contact thermal resistance that other forms of finned steel pipes cannot overcome due to the two body structure of fins and tubes, and the longitudinal section of fins is trapezoidal, thus improving the heat transfer efficiency of fins.
7. The integral spiral fin expansion surface heat transfer is adopted. Under the same working conditions, the heat transfer coefficient of the tube bundle is 3.5-5.5 times that of seamless steel pipes with equal wall thickness and inner diameter, and twice that of welded spiral fin steel pipes of the same specification.
8. The fins and tubes are integrated in structure, so they are used in high-temperature and harsh working environments without the unstable heat transfer performance caused by fin relaxation and detachment that other forms of finned steel pipes are prone to.