ASTM A179 G Type Sprial Fin Tube L Type Carbon Steel For Heat Exchanger

ASTM A179 G Type L Type Carbon Steel Sprial Fin Tube For Heat Exchanger 

Detail:

• G Fin Finning Lines: 7 finning machines.
• Daily capacity up to 7,000 meters.
• Tube OD: 50.8mm(2'') max.
• Tube Length: 18,000mm max.
• Fin Height: 16.5 mm max.
• Fin Thickness: generally 0.4mm ~0.6mm
• Fin Pitch: 2.1 mm (12FPI) min.

 
Manufacturing process
The aluminum fin strip is tension wound and placed into a groove cut into the tube.
 
G Fin Fluted Depth: 
Appr. 0.4mm.
 
Surface Protection: 
Zinc or Aluminum metalized applied by an electro spray arc system coating.
 
Acceptance criteria:
API Standard 661(Air-Cooled Heat Exchangers for General Refinery Service) or the delivery conditions.
 
Accessories
Tube support box, clamp or spacer box (Materials: Aluminum, Zinc and Stainless Steel).
 
Delivery condition:
Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of G-Fin Embedded Finned Tube.
 
Packing: The desiccants are put into each package for continental transporation as well.
 
Applications:
 
The common application fields are:

1. Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants);
2. High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids);
3. The petroleum, chemical and petrochemical industries;
4. The food processing and refrigeration industries;
5. Natural gas treatment;

 
Specifications:
 
Grooved G type Finned Tubes are combined with two different materials.