Extruded Fin Tube with Base Tube ASME SB163 NO4400 and Aluminum Fin
Extruded fin tubes are a type of finned tube where the fins are formed by extruding a sleeve of aluminum or other materials over a base tube, creating a strong mechanical bond between the fins and the tube. This process results in high-efficiency heat transfer with excellent durability and resistance to thermal and mechanical stresses.
Extruded fin tubes are widely used in air-cooled heat exchangers (ACHEs) due to their superior heat transfer capabilities and robust construction. In air-cooled heat exchangers, the primary function is to transfer heat from a process fluid within the tubes to the surrounding air, facilitated by the fins attached to the tubes.
Extruded fin tubes are integral components in air-cooled heat exchangers, providing high efficiency, durability, and reliability in a wide range of industrial and commercial applications. Their ability to enhance heat transfer, combined with their robust construction, makes them suitable for environments where efficient cooling and long service life are critical.
Technical Details/Base Tube Details:
Tube Diameter : 20 mm OD Min to 219 mm OD Max.
Tube Thickness : Minimum 2 mm up to 16mm
Tube Material : Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, duplex Steel, Super Duplex Steel, Inconel, High Chrome High Nickle & Incolloy, CK 20 material and some other material.
Fin Details:
Fins Thickness : Min. 0.8 mm to Max. 4 mm
Fins Height : Min 0.25” (6.35 mm) To Max.1.5” (38 mm)
Fin Density : Min 43 Fins Per Meter To Max. 287 Fins Per Meter
Material : Carbon Steel, Stainless Steel, Alloy Steel, Corten steel, Duplex Steel and Incolloy.
What is Monel 400
Monel 400 is a nickel-copper alloy (about 67% Ni – 23% Cu) that is resistant to sea water and steam at high temperatures as well as to salt and caustic solutions. Alloy 400 is a solid solution alloy that can only be hardened by cold working. This nickel alloy exhibits characteristics like good corrosion resistance, good weldability and high strength. A low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance to stress-corrosion cracking in most freshwaters, and its resistance to a variety of corrosive conditions led to its wide use in marine applications and other non-oxidizing chloride solutions.
Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.24max | 28.0-34.0 | 2.50 max | 63.00 min | – |
Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 | 40 % |
Physical Properties
| Properties | Metric | Imperial |
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
Pressure Rating
| Tube O.D. (in.) | Wall Thickness of Tube (inches) |
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 |
| Working Pressure (psig) |
| 1/8 | 7900 | 10100 | | | | | | |
| 1/4 | 3700 | 4800 | 7000 | 9500 | | | | |
| 5/16 | | 3700 | 5400 | 7300 | | | | |
| 3/8 | | 3100 | 4400 | 6100 | | | | |
| 1/2 | | 2300 | 3200 | 4400 | | | | |
| 3/4 | | | 2200 | 3000 | 4000 | 4600 | | |
| 1 | | | | 2200 | 2900 | 3400 | 3900 | 4300 |
Applications
- 1. Marine engineering.
- 2. Chemical and hydrocarbon processing equipment.
- 3. Gasoline and freshwater tanks.
- 4. Crude petroleum stills.
- 5. De-aerating heaters.
- 6. Boiler feed water heaters and other heat exchangers.
- 7. Valves, pumps, shafts, fittings, and fasteners.
- 8. Industrial heat exchangers.
- 9. Chlorinated solvents.
- 10. Crude oil distillation towers.
