Product Specification

G Type Fin Tube SA179 Stainless Steel Finned Aluminum Tubing For Heat Exchanger

【Material】

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.

【Specifications】

• 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)

【Main Features】

• 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.

【Our Advantages】

As a professional heat exchanger fin tube manufacturer, we focus on precision, quality control, and performance consistency.

1. Strict Tolerance Control:

   • Tube straightness ≤ 1 mm/m

   • Dimensional tolerance within ±0.1 mm

   • Fin height tolerance ±0.2 mm

2. 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.

3. Material Versatility:

   • Optional fin materials: Aluminum, Copper, Stainless Steel, or Carbon Steel to match specific heat exchanger media and corrosion conditions.

4. Quality Assurance:

   • 100% eddy current and hydrostatic testing before delivery.

   • Surface cleaning, anti-corrosion coating, and protective capping available upon request.

5. Technical Support:

   • Custom engineering solutions for air coolers, boilers, condensers, and petrochemical heat exchangers.

【Chemical Composition】 

【Mechanical Properties】

【Standards】

• 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.

【Application Fields】

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.

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

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.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

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.