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Products 

 

ASTM A498,ASTM A1012,ASTM B359,ASME SB359,ASTM B898 Integral Fin Tube

ASTM A179 low-finned-steel-tubes-for-LNG-plants
  • ASTM A179 low-finned-steel-tubes-for-LNG-plants
  • heat_exchanging_copper_spiral_finned_tube_with_extruding_process
  • Extruded-Low-Fin-Tubes
  • Low Fin Seamless Copper Tube for Evaperators
  • ASTM A498,ASTM A1012,ASTM B359,ASME SB359,ASTM B898 Integral Fin Tube
  • High Fin Seamless Copper Tube for Evaperators
  • ASTM A498,ASTM A1012,ASTM B359,ASME SB359,ASTM B898 Integral Fin Tube
  • ASTM A498,ASTM A1012,ASTM B359,ASME SB359,ASTM B898 Integral Fin Tube
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Product Description

Integrally Finned Tube

Developed as a method of increasing heat transfer performance of fluids whilst minimising the physical size and cost of the heat exchanger

The fin is produced by being rolled from the wall of the tube and is therefore integral with the tube itself. Due to fin rolling the wall thickness beneath the fin section is reduced compared with the plain ends. The bore of the fin section is slightly reduced.  Most tubular materials can be finned, however hardness of the material usually determines the finning code or fin profile.

Harder materials such as stainless steel, nickel alloys and titanium are usually supplied with a greater fin density (28, 30 or 36 fins / inch).  This shallower fin profile reduces work hardening of the material and helps eliminate the possibilty of fin root cracking. Softer materials such as carbon steel, copper and copper alloys are usually supplied with a deeper profile giving a lower fin density (16 or 19 fins / inch).

Plain ends and any skipped sections must be specified.

Finished tubes can be U bent if required. The U bend area can be either finned or plain, to meet the required specification.

Manufacturing Limitations

Materials:

1. Carbon and low alloy steel

2. Stainless steel: TP304 / TP304L / TP316 / TP316L

     TP321 and duplex

3. Copper alloys: Alloy 443 / 687 / 706 / 715 etc

4. Titanium and high nickel alloys Tube Sizes

     outside diameter: 12.7 / 15.8 / 19.05 and 25.4mm

     Plain end wall thickness: >= 1.25mm

     Length: up to 24,000mm

Surface Area Improvement

Typical surface area improvements by using integral

low finned tubes are:

 

1. 19.05mm OD with 19 fins / inch: 270%

2. 25.4mm OD with 26 fins / inch: 330%

 

Depending on the fluids within the heat exchanger the

thermal improvement can range from between 20%

to in excess of 100%

 

 

 

 

 

 

Alloy

 

Plain  Dimensions

Finned  Dimensions

 

Outside 

Diameter

(mm)

 

Wall

Thickness

(mm)

 

FPl

 

Fin OD

(mm)

 

Fin

Height

(mm)

 

Notch of Fin

 

Nominal  Outside  Surface  Area(㎡/m)

 

Actual Outside  Surface  Area(㎡/m)

 

Wall

Under

Fins

(mm)

 

Ridge Number

(n)

 

Ridge  Height

(mm)

 

Nominal  Outside  Surface  Area

(㎡/m)

 

Actual Outside  Surface  Area(㎡/m)

 

 

 

T2/TP2

16

1.10

42

15.85

0.90

0.050

0.203

0.65

--

--

0.040

0.040

16

1.20

42

15.85

0.90

0.050

0.211

0.63

30

0.30

0.040

0.048

15.88

1.00

46

15.80

0.75

0.050

0.195

0.60

20

0.35

0.041

0.048

19

1.13

46

18.85

0.95

0.060

0.272

0.63

45

0.38

0.050

0.084

19

1.20

46

18.85

0.95

0.060

0.272

0.65

45

0.38

0.049

0.084

19

1.13

50

18.85

0.92

0.060

0.288

0.63

45

0.38

0.050

0.084

25.25

1.18

50

25.25

0.92

0.060

0.391

0.71

54

0.40

0.069

0.118

BFe10-1-1

18.85

1.20

46

18.85

0.90

0.060

0.263

0.71

--

--

0.049

0.049

HSn70-1

18.85

1.20

46

18.85

0.85

0.060

0.253

0.71

3.3

0.25

0.050

0.060

HAl77-2

13.85

1.50

42

13.85

1.0

0.044

0.191

1.1

--

--

0.030

0.030

 

Monometallic finned tube with fins drawn from the parent metal of the tube. All monometallic Tubes are using a cold rolling or ribbing process.

Materials: Aluminium, copper, brass, cupronickel, carbon steel, stainless steel, titanium, etc.
FPI: 12, 16, 19, 28, etc.
OD: 1/2"-1"

 

Applications:
Aftercoolers, air coolers, air heaters, charge air chillers, condensers, convection heaters, electric heaters, evaporators, fluid coolers, gas coolers, heat pipes, hydrogen coolers, industrial tumble dryers, intercoolers, immersion heaters, oil coolers, radiators, refrigeration, solvent recovery and steam to air heat exchangers.

 

Benefits of Finned tubes

Finned tubes provides 2.5 to 3 times the external surface area of bare tube, which yields numerous benefits for the heat transfer equipment. Reduced pace, weight & structural savings in compact heat exchanger is valuable. The more expensive the tube material, the more dramatic the cost savings for corrosive service. Proper material selection can eliminate costly downtime & maintenance. Coastal refineries using once-through seawater cooling systems can benefit by substituting conventional copper nickel tubing with Titanium finned tube, Titanium finned tube is highly resistant to seawater corrosion erosion.
 
 

Quality standards:

ASME Sec. 8, Div 1, UG-8   (and Appendix 23 for external pressure rating where necessary)

ASTM B-891   Seamless and Welded Titanium and Titanium Alloy Condenser and Heat Exchanger Tubes with Integral Fins

ASTM A-1012   Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes with Integral Fins

ASTM A-498  Seamless and Welded Carbon, Ferritics and Austenitic Alloy Steel Heat Exchanger Tubes with Integral Fins

ASTM B-359   Copper and Copper Alloy Seamless Condenser and Heat Exchanger Tubes with Integral Fins

 

Product Image

ASTM A179 low-finned-steel-tubes-for-LNG-plants
ASTM A179 low-finned-steel-tubes-for-LNG-plants

heat_exchanging_copper_spiral_finned_tube_with_extruding_process
heat_exchanging_copper_spiral_finned_tube_with_extruding_process

Extruded-Low-Fin-Tubes
Extruded-Low-Fin-Tubes

Low Fin Seamless Copper Tube for Evaperators
Low Fin Seamless Copper Tube for Evaperators


High Fin Seamless Copper Tube for Evaperators
High Fin Seamless Copper Tube for Evaperators



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