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.

Who We are ?

-------A professional steel pipes materials inventor, manufacturer and solution provider
Torich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the factories of Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of TORICH INTERNATIONAL LIMITED. The factories’ technicians are of great engineering experience in steel pipe industry for more than 20 years, which are in great command of production technology for Cold Drawing and Cold Rolling. So we have strong technician team and manufacturing capability.

What products we do?

------- Invent and produce various Precision Steel Pipes

Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes

Bearing Steel Tubes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes

Honed Tubes

Hydraulic Cylinder Steel Tubes

Hydraulic Telescopic Cylinder Tubes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes

What TORICH do:
1. Producing Steel Tubes
2. Selling both on Domestic and International Market
3. Precisely Targeting Customers’ Requirement- Sourcing the right factory for right products for Customers

Products Application:
Oil Cylinders
Air Cylinder, 
Automotive Cylinder Liners
Boilers, Pressure Vessels
Shell & Heat Exchangers
Jack Lifting
Telescopic Systems
Pneumatic Cylinders
Agricultural Machineries

Size range is: 
O.D. 4-350mm, 
W.T. 0.5-30mm, 
Length: according to customer’s requirement and agreement
 

Steel Grade:
Carbon Steel Grade:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;

Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.
Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3, 13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn;
Carbon steel tube: A179,A192,A210,DIN17175,etc.

Bearing Steel Grades:
GCr15 52100 suj2 suj3 100Cr6 SKF3S SKF3S 20CrNiMo 8620H 4118H;

Nickel Alloy Grade:
N02200/2201, N04400, N06600, N06601, N06625, N06852, N06219, N06690, N08800/8810/8811, N08825, N08028, N08535, N08904, N08925, N08926, N010276, N06022, etc.

Austenitic/Super Austenitic Stainless Steel Grade:
304/304L, 316/316L, 314, 321, 347H, 316Ti, 316LMod, 317L/N, 310S, 253MA, 330, 904L, S31254, XM-19, etc. 

Ferrite/Martensite Stainless Steel Grade:
TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439, TP446, etc. 

Duplex/Super Duplex Stainless Steel Grade:
S31803, S32304, S31500, S32550, S32750, S32760, etc. 
Corporate Culture:
We focus on Quality First, Quality Traceability, and Quality Stability!
We focus on Customer First, People First, and Quality-Oriented!
Success:
First factory started in 1997, in the name of Torich , now covers 50000 square meters of factory building, with more than 100employees, and over 45 million RBM assets.
In 2008, we started the company of Torich International Limited for international business and marketing.
Welcome partners from all over the world for long term cooperation!