H Type Finned Tubes Welded Finned Pipes Tubes For Heat Exchanger

Material Introduction

H-type finned tubes are high-efficiency heat transfer elements consisting of carbon steel or alloy steel base tubes with H-shaped fins welded on both sides. These tubes are primarily used in industrial heat exchangers, economizers, and air preheaters for power plants, refineries, and boilers. The H-shaped fin design maximizes heat exchange surface area, reduces air resistance, and enhances overall thermal efficiency.

Specifications

• Tube Material: Carbon steel, alloy steel, stainless steel

• Fin Material: Carbon steel, alloy steel

• Tube Outer Diameter: 25 mm – 63.5 mm

• Fin Height: 12.5 mm – 25 mm

• Fin Thickness: 1.0 mm – 1.5 mm

• Fin Pitch: 3.2 mm – 10 mm

• Fin Type: H-type double rectangular welded fins

• Tube Length: Up to 12 meters (customizable)

Main Features

• Enhanced Heat Transfer Efficiency: The H-shaped fins form a continuous and wide heat transfer surface, increasing the heat exchange rate by over 30% compared to spiral fin tubes.

• Excellent Structural Strength: Welded fins ensure superior mechanical bonding and durability under high temperature and pressure conditions.

• Low Air Flow Resistance: The parallel fin arrangement creates smooth airflow channels, effectively reducing dust accumulation and pressure drop.

• Corrosion and Oxidation Resistance: Available in various grades of carbon steel or alloy steel, suitable for harsh service environments.

• Easy Maintenance: The rectangular fin structure facilitates cleaning and inspection, improving system reliability and service life.

Our Advantages

From a professional manufacturing perspective, customers typically care about heat transfer efficiency, welding quality, dimensional tolerance, and operational reliability.
We address these concerns as follows:

• Precision Welding: Using high-frequency resistance welding ensures uniform fin attachment, minimizing thermal stress and improving bonding strength.

• Dimensional Accuracy: Fin height tolerance within ±0.2 mm and tube straightness within 1 mm/m guarantee easy assembly and stable performance.

• Material Traceability: All tubes and fins are sourced from certified mills with full inspection reports, including tensile, impact, and hardness tests.

• Thermal Performance Optimization: Custom fin pitch and height configurations available for specific gas flow and heat transfer requirements.

Chemical Composition

Mechanical Properties

Applicable Standards

• ASTM: A213 / A210 / A179 / A192

• EN: EN 10216-2 / EN 10217-2

• JIS: G3461 / G3462

• GB: GB5310 / GB3087

• GOST: GOST 550-75

Application Fields

H-type finned tubes are widely used in:

• Power Plants: Economizers, air preheaters, and waste heat recovery units.

• Petrochemical Industry: Process gas coolers, reformer units, and condensers.

• Boiler Systems: Water tube boilers and gas-fired systems.

• Refineries: Heat recovery boilers and exhaust heat exchangers.

• Steel Mills: Flue gas heat recovery systems and air heaters.