Spezilla Tube Co., Ltd. (Shanghai)
Spezilla Tube Co., Ltd. Excellence in Stainless Steel Tubing
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Extruded Finned stainless steel heat exchanger tubing 11 FPI 25000MM Length
FIN Details
Fins Height : Min 0.31” (7.87 Mm) To 0.75” (19.05 Mm) (depending On Tube Od)
Fin Density : Minimum 7 Fins Per Inch To Maximum 12.4 Fins Per Inch
Material : Aluminum & Copper
TUBE Details
Tube Diameter : Min 0.5” (12.7 Mm) To Max. 2” (50.8 Mm) Od
Tube Mateial : Carbon Steel, Stainless Steel, Copper & Copper Alloys Or As Per Customer’s Requirement.
L-foot tension wound finned tubes are an economical solution for applications requiring greater resistance to vibration and heat cycling typical of air cooled heat exchangers. The L-foot finned tube design mechanically locks the fins and provides broader contact surface between tube and fin. L-foot tension wound finned tubes are commonly used in applications with metal temperatures up to 350 degrees Fahrenheit.
Embedded finned tubes offer solutions where higher temperatures, continuous thermal cycling and tube vibration due to high velocity air streams can cause failures. The fin is mechanically embedded into a groove that is plowed in the tube O.D. and is locked into place by rolls that force the groove to tightly close around the fin base. Embedded finned tubes are commonly used in applications with metal temperatures up to 750 degrees Fahrenheit.
Extruded finned tubes provide the greatest resistance to atmospheric corrosion. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied. Where atmospheric corrosion is present and when operated within design temperature limits, extruded finned tubes provide the most stable performance over time as compared to the other fin types. The fin is rolled from an outer aluminum tube by a process using pressure to create a rolled "pressure bond" between the liner tube and fins. Extruded finned tubes are commonly used in applications with temperatures up to 550 degrees Fahrenheit.
| Fin Material - Extruded-fin Finned Tubes | ||||
|---|---|---|---|---|
| Fins | SB209 - B209 Aluminium Alloy 1050 or 1060 | SB75 - B75 Copper | ||
| Notes | For different materials please contact our technical office | |||
| Fin Material - G-fin; L-fin; LL-fin; KL-fin Finned Tubes | ||||
|---|---|---|---|---|
| Fins | EN573-3 Aluminium Alloy 1050 or 1060 | SB152 - B152 Copper | ||
| Notes | For different materials please contact our technical office | |||
| Tube Material - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | ||||
|---|---|---|---|---|
| Tube | SA179 - A179 Carbon Steel | SA213 - A213 Stainless Steel | SB75 - B75 Copper | SB111 - B111 Copper Alloy |
| Notes | For different materials please contact our technical office | |||
Applications - G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes
Tension wound finned tubes, embedded finned tubes and extruded finned tubes are main devices for air coolers and the common application fields are:
Heat exchangers for power plants (electric, nuclear, thermal and geothermal power plants)
Steam condensate systems
Chemical and petrochemical industry
Food processing plants and refrigeration technology
Industrial (steel mills, incinerators, gas compression facilities).
