TORICH INTERNATIONAL LIMITED
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The G Type Fin Tube consists of a carbon steel base tube (SA179) and aluminum fins that are mechanically embedded into the outer surface of the tube in a G-shaped groove. This design ensures excellent thermal contact between the fin and the tube, enhancing heat transfer efficiency while maintaining mechanical stability.
Base Tube Material: ASTM A179 Seamless Carbon Steel
Fin Material: Aluminum 1050 / 1060 / 1070 / 5052
Fin Type: G-type (Embedded)
Tube OD: 12.7 mm – 63.5 mm
Tube Wall Thickness: 1.0 mm – 5.0 mm
Fin Height: 5 mm – 16 mm
Fin Thickness: 0.3 mm – 0.5 mm
Fin Pitch: 2.0 mm – 5.0 mm
Tube Length: Up to 12 meters (customizable)
Excellent Heat Transfer Efficiency: The tight mechanical bond between the fin and tube maximizes heat exchange performance.
Corrosion and Oxidation Resistance: The aluminum fins provide superior resistance to oxidation and atmospheric corrosion.
High Temperature and Pressure Resistance: Ideal for air coolers and heat exchangers operating under demanding conditions.
Easy Maintenance: The robust mechanical joint prevents fin loosening and ensures long-term reliability.
Customizable Design: Fin height, thickness, pitch, and materials can be adjusted per customer requirements.
As a professional heat exchanger fin tube manufacturer, we focus on precision, quality control, and performance consistency.
Strict Tolerance Control:
Tube straightness ≤ 1 mm/m
Dimensional tolerance within ±0.1 mm
Fin height tolerance ±0.2 mm
Excellent Bonding Quality:
The G-type fin is embedded by high-precision rolling equipment ensuring >95% contact rate between fin and tube.
Enhanced heat transfer coefficient compared to standard wrapped fin tubes.
Material Versatility:
Optional fin materials: Aluminum, Copper, Stainless Steel, or Carbon Steel to match specific heat exchanger media and corrosion conditions.
Quality Assurance:
100% eddy current and hydrostatic testing before delivery.
Surface cleaning, anti-corrosion coating, and protective capping available upon request.
Technical Support:
Custom engineering solutions for air coolers, boilers, condensers, and petrochemical heat exchangers.
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) |
|---|---|---|---|---|---|
| ASTM A179 | ≤0.06 | 0.27–0.63 | ≤0.035 | ≤0.035 | ≤0.25 |
| ASTM A192 | ≤0.12 | 0.27–0.63 | ≤0.035 | ≤0.035 | ≤0.25 |
| ASTM A210 Gr.C | ≤0.35 | 0.29–1.06 | ≤0.035 | ≤0.035 | ≤0.10 |
| EN 10216-2 P235GH | ≤0.16 | 0.60–1.20 | ≤0.025 | ≤0.020 | ≤0.40 |
| JIS G3461 STB340 | ≤0.17 | 0.30–0.80 | ≤0.035 | ≤0.035 | ≤0.35 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| ASTM A179 | ≥325 | ≥180 | ≥35 | ≤72 |
| ASTM A192 | ≥325 | ≥180 | ≥35 | ≤72 |
| ASTM A210 Gr.C | ≥485 | ≥275 | ≥30 | ≤89 |
| EN 10216-2 P235GH | 360–500 | ≥235 | ≥25 | ≤85 |
| JIS G3461 STB340 | 340–480 | ≥205 | ≥30 | ≤85 |
ASTM: A179 / A192 / A210
EN: 10216-2 P235GH
JIS: G3461 STB340
GB: 5310 / 3087
G-Type Fin Manufacturing Standard: Based on international heat exchanger fin tube manufacturing codes and ASME practices.
G-type finned tubes are widely used in industrial heat exchangers and air-cooled systems requiring high thermal efficiency and corrosion resistance.
Power Generation: Air coolers, condensers, economizers.
Petrochemical Industry: Process heaters, gas coolers, oil refineries.
HVAC Systems: Air handling units, heat recovery systems.
Automotive & Marine: Intercoolers, charge air coolers.
Boiler Manufacturing: Waste heat recovery and flue gas cooling systems.
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.