Double H (HH) Finned Tube for Boilers Economizer

Double H Fin Tube for Boiler Economizers Manufacturer

As an advanced extended-surface heat transfer component, our double h fin tube utilizes a unique dual-pipe monolithic fin design. This not only exponentially increases the effective heat transfer area but also provides unmatched resistance against wear and ash accumulation. If you are looking to maximize the lifespan and efficiency of your boiler economizer, Datang Finned Tube is your trusted global partner.

Double H Fin Tube Material Combinations

• ‌Fin Material‌:

  • C.S. (most common grade: Q235B)
  • S.S. (most common grades: AISI 304, 316, 409, 410, 321, 347, 2205)
  • A.S. (most common grade: 12 CrIMoV)

• ‌Tube Material‌:

  • C.S. (most common grade: A106 Gr.B)
  • S.S. (most common grades: TP304, 316, 321, 347)
  • A.S. (most common grades: T/P5, 9, 11, 22, 91)

Applied Temperature

• 300°C

Why Choose Datang’s Double H Fin Tube?

1. Superior Anti-Fouling & Anti-Caking Performance

The structural geometry of Datang’s double h fin tube creates straight channels for flue gas flow. Because the fins possess high structural rigidity, they induce a “self-cleaning gas-flow effect.” This keeps the boiler economizer free from ash accumulation, significantly lowering maintenance costs and downtime.

2. High Heat Transfer Efficiency & Compact Design

By integrating our double h fin tube, the heating surface area is multiplied. For the same thermal output, a heat exchanger utilizing Datang’s double h fin tube requires a much smaller footprint and less structural weight, saving both premium space and steel material costs in the boiler room.

3. Advanced Wear Resistance for Extended Lifespan

Fly ash erosion is a primary cause of tube bursts in traditional economizers. Datang’s double h fin tube optimizes gas flow boundary layers, shifting the high-wear zones away from the base tube wall. This advanced aerodynamic design extends the service life of the economizer by 3 to 4 times compared to bare tubes.

4. Precision Automatic Welding Technology

At Datang Finned Tube, we utilize state-of-the-art automatic resistance welding to manufacture every single double h fin tube. With a fin-to-tube bonding rate exceeding 95%, contact thermal resistance is minimized, ensuring reliable structural integrity under extreme high-temperature and high-pressure conditions.

With years of dedicated expertise serving global boiler manufacturers and power plants, Datang Finned Tube stands for uncompromising quality. From raw material inspection to final pressure testing and non-destructive testing (NDT), we strictly adhere to international manufacturing standards (such as ASME, ISO9001). We ensure that every batch of double h fin tube shipped from our facility delivers world-class durability and thermal performance.

Are you designing a new boiler project or upgrading an existing economizer system? Let our engineering team provide you with the ideal double h fin tube configuration. Contact us today for free technical consultations, drawing reviews, and a competitive quotation!