A789 UNS2205 duplex stainless steel with cooper Fin Tube , OD1'' , 8FPI Grooved G Type 

ASTM A789 / A789M : Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service 

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501) 

Quick Detail: 

G Fin Finning Lines: 7 finning machines.

Daily capacity up to 7,000 meters.

Tube OD       : 50.8mm(2'') max.

Tube Length : No limit

Fin Height     : ~16 mm max.

Fin Thk.         : 0.4mm average, regular thickness is 0.25mm~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( if necessary)

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;

Competitive Advantage:

1. The Grooved G type Finning Machines are designed and assembled by ourselves and we can offer you finning machine and all accessories etc...

2. The contact of manufacturing Grooved fin tubes is designed for a high wall temperature of up to 350°C.

Specifications:

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