Embedded Fin Tube for Heat Exchanger
The fins are manufactured by embedding the fin strip into a groove formed on the base tube.
The Fin is allowed to be placed in the groove and then the backfilling of the groove is carried out to ensure firm adherence of the fins to the base tubes.
Processing technology: fins are firmly embedded in the outer surface of the base tube with mechanical grooves;
Base tube material: carbon steel, alloy steel, stainless steel, dual phase steel, copper tube;
Fins: Aluminium 1060, Aluminium 1100, T2 copper;
Datang offers different finned tubes: tension wound finned tubes, embedded finned tubes and extruded finned tubes.
Tension wound finned tubes are formed by winding a strip made of aluminium or copper around the tube under tension. The strip winding technology provides different types of fins: L-Fin, LL-Fin, KL-Fin.
Embedded fins (G-Fins) are made by winding aluminium or copper strip into a helical groove machined on the outer surface of the tube.
| G-fin | L-fin |
|---|---|
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| LL-fin | KL-fin |
|---|---|
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G type finned tube Application Area
G fin tubes find extensive applications in various industries due to their excellent heat transfer capabilities and durability. Some of the key industries where they are commonly used include:
Petroleum, chemical, and petrochemical industries
Natural gas processing
Steel industry: blast furnace and converter system
Power generation: steam turbine flue gas condensation, condensation water contact cycle cooling condensation, fossil and nuclear power plants
Air conditioning (Freon, ammonia, propane)
Waste incinerators
Compressor coolers, etc.
Fin Material – G-fin; L-fin; LL-fin; KL-fin Finned Tubes
| Fin Material – G-fin; L-fin; LL-fin; KL-fin Finned Tubes | ||
|---|---|---|
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Fins
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SB209 – B209 Aluminium Alloy 1050 or 1060
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SB75 – B75 Copper
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For different materials please contact our technical office.
Tube Material – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
| Tube Material – G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | ||||
|---|---|---|---|---|
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Tube
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SA179 – A179 Carbon Steel
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SA213 – A213 | SA249 – A249 – Stainless Steel
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SB75 – B75 Copper
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SB111 – B111 Copper Alloy
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For different materials please contact our technical office.
Technical Specifications
| Technical Specifications | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Fin Types
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Length
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Tube Diameter
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Thickness
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Finned Tube Diameter
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Fins Density
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(m)
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(ft)
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(mm)
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(inch)
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(mm)
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(BWG)
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(mm)
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(inch)
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(fins/m)
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(fins/inch)
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Extruded
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0,3 ÷ 18
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1 ÷ 59
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15,88 ÷ 50,8
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5/8” ÷ 2”
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0,889 ÷ 3,76
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20 ÷ 9
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38,10 ÷ 76,20
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1 ½” ÷ 3”
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236 ÷ 472
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6 ÷ 12
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L-Fin
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LL-Fin
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KL-Fin
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G-Fin
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Technical Specifications
| Technical Specifications | |||
|---|---|---|---|
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Fin Types
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Working Temp.
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Resistance
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Corrosion
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Mechanical
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Extruded
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280 ÷ 300 °C
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↑↑
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↑↑
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L-Fin
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135 ÷ 155 °C
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↑
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↓↓
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LL-Fin
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155 ÷ 165 °C
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↑
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↓
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KL-Fin
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165 ÷ 185 °C
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↑
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↑
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G-Fin
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380 ÷ 420 °C
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↓
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↑
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Inspections and Tests
- Chemical Composition
- Mechanical Properties
- Hydrostatic Test
- Pneumatic Test
- Boroscopic Inspection
- Eddy Current Test
- Tensile Test (only for bimetallic tube)
G Type Embedded Finned Tube
G Type Embedded Finned Tube is that the fin strip is tension wound and placed in the groove cut into the tube with appr, 0.4mm
groove depth, then the bottom of the fin is guided into the groove and backfilled with base tube Firmly, finally lock the fins in
place by rolling the grooves enclosed in the bottom of the fins. The maximum operating temperature of G Type Embedded Finned Tube
can reach 400°C.
Core tube material:
1. Carbon steel: A179, A192, SA210 Gr A1/C, A106 Gr B
2. Stainless steel: TP304/304L, TP316/TP316L/316Ti, A789 S31803/S2205
3. Copper: UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10
Fin material:
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
Fin type: Solid plain
Fin Tube Type: G Type Embedded
Outer diameter (OD): 16mm Min~50.8mm max.
Tube length: up to 18,000 mm.
Fin height: 16.5mm max.
Fin thickness: generally 0.4mm~0.6mm
Fin pitch: 2.1mm minimum (12FPI)
Surface Protection: Both bare ends shall be zinc or aluminum metallized by electrospray arc system coating.
Accessories: Tube support boxes, clamps or spacer boxes (materials: aluminium, zinc and stainless steel).
Types of ASTM A179 finned tube for heat exchanger
- ASTM A179 L Type Finned Tube
- ASTM A179 LL Type Finned Tube
- ASTM A179 KL Type Finned Tube
- ASTM A179 G Type Finned Tube
- ASTM A179 H Type Finned Tube
- ASTM A179 Extruded Type Finned Tube
- ASTM A179 HF Finned Tube
- ASTM A179 Elliptical Finned Tube
- ASTM A179 Stud Finned Tube
- ASTM A179 Serrated Finned Tube
- ASTM A179 U Bending Low Finned Tube
- ASTM A179 Crimped Finned Tube
- ASTM A179 Inner Grooved Finned Tube
- ASTM A179 Longitudinal Finned Tube
