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:
- Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants);
- High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids);
- The petroleum, chemical and petrochemical industries;
- The food processing and refrigeration industries;
- Natural gas treatment;
Competitive Advantage:
- The Grooved G type Finning Machines are designed and assembled by ourselves and we can offer you finning machine and all accessories etc...
- 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.
| Items | General Materials | Popular ASTM Materials |
| Core Tube Material | carbon steel, ow-alloy steel, stainless steel, brass, copper, cooper-nickel alloys, aluminum bronze, nickel alloys. | 1. Carbon Steel: A179, A192,SA210 Gr A1/C,A106 Gr B 2. Stainless Steel: TP304/304L,TP316/TP316L/316Ti, A789 S31803/S2205 etc... 3. Copper:UNS12200/UNS14200/UNS70600, CuNi70/30,CuNi 90/10 |
| Fins Material | 1. Aluminum 2. Copper. 3. Steel | 1. Aluminum(Alu.1100/1060/1050) 2. Copper. 3. Steel |
| All dimensions are in Inches and specification upon your requests. |
| Tube OD | Fin Height | Fin Thickness | Fins per Pitch(Density) |
| 5/8 | 3/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
| 3/4 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
| 1 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
| 1 1/4 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
| 1 1/2 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
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A789 UNS2205 duplex stainless steel with cooper Fin Tube , OD1'' , 8FPI Grooved G Type Images
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