TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED Make Your Steel Tube Purchase Easy!
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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.
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)
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.
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.
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| ASTM A213 T11 | 0.05–0.15 | 0.50–1.00 | 0.30–0.60 | ≤0.025 | ≤0.025 | 1.00–1.50 | 0.30–0.60 | 0.44–0.65 |
| ASTM A213 T22 | 0.05–0.15 | 0.50–1.00 | 0.30–0.60 | ≤0.025 | ≤0.025 | 1.90–2.60 | 0.30–0.60 | 0.87–1.13 |
| ASTM A210 Gr.C | 0.27 max | 0.10 min | 0.93 | 0.035 max | 0.035 max | – | – | – |
| ASTM A179 | 0.06–0.18 | 0.27 max | 0.27–0.63 | 0.035 max | 0.035 max | – | – | – |
| ASTM A192 | 0.06–0.18 | 0.25 max | 0.27–0.63 | 0.035 max | 0.035 max | – | – | – |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | Impact Energy (J) |
|---|---|---|---|---|---|
| ASTM A213 T11 | ≥415 | ≥205 | ≥30 | ≤163 | ≥27 |
| ASTM A213 T22 | ≥415 | ≥205 | ≥30 | ≤179 | ≥27 |
| ASTM A210 Gr.C | ≥485 | ≥275 | ≥30 | ≤179 | ≥27 |
| ASTM A179 | ≥325 | ≥180 | ≥35 | ≤137 | ≥27 |
| ASTM A192 | ≥325 | ≥180 | ≥35 | ≤137 | ≥27 |
ASTM: A213 / A210 / A179 / A192
EN: EN 10216-2 / EN 10217-2
JIS: G3461 / G3462
GB: GB5310 / GB3087
GOST: GOST 550-75
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.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.