| Material: | Monel 400 | Fin Type: | G Type |
|---|---|---|---|
| NDT: | HT/ECT | Application: | Heat Exchanger |
| High Light: | Heat Exchanger Fin Tube， Monel 400 Fin Tube， 20mm G Type Finned Pipe | ||
ASME SB163 Monel 400 / N04400 Embedded Finn Tube G Type Nickel Alloy Bare Tube
A fin tube is a tube that has small fins around the outside surface. These fins act as a filter and a mechanism to transfer heat from the material inside the tube to the outside space or vice versa. Fin tubes are used in applications that require a transfer of heat from a hot fluid to a colder fluid through the tube's wall. The rate at which such heat transfer occurs depends on three factors:
The temperature difference between the two fluids.
The heat transfer coefficient between each of the fluids and the tube wall.
The surface area to which the fluid is exposed.
SB 163 N04400 Nickel based ASME SB 163 UNS N04400 pipe is known for its resistant to seawater and steam at high temperaturesas.
G-Type Finned Tube Features:
- 1. Compact design
- 2. High-performance
- 3. Easy installation
- 4. Less space required
- 5. Less cabling
- 6. Optimized surface
- 7. Finest technology used
- 8. Average corrosion protection
- 9. Less energy consumption
- 10. Increased reliability
- 11. Low maintenance
- 12. High mechanical resistance
Processes of G-type Finned Tube
In G-type finned tubes， the fins are prepared by embedding the metal strip into a groove. The latter is formed on a base tube. Placing the fin on it， back-filling is done – resulting in strong attachment of the fins to the base tubes. Hence， the name G-Fin Tubes has come up. The three processes mentioned above are carried out simultaneously. Maximum heat transfer is expected out of the g-fin tubes as the fins are strongly attached to the base tube.
The G-type finned tubes usually work at high temperature (with around 400 degree Celsius) applications. Made of copper， carbon， or aluminium， these fins have comparatively less resistance towards atmospheric corrosion. On the other hand， mechanical resistance is acceptable. Stainless steel and carbon steel fin materials are also used， but particular processing and tooling of the steel fin strips are necessary. Air coolers， radiators， etc use the g-fin tubes.
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.
For a rapid quotation， plz send with following requirement:
Number of pieces
base tube: Diameter， thickness， length and material specification.
Fins: material specification， type (solid or serrated)， height， thickness， spacing， finned length and unfinned sections. Weld prep details if required.
Delivery period required.
About Monel 400 Tube
Monel belongs to a group of nickel alloys. It is produced with high concentrations of copper and chromium in their chemical composition. These tubes are designed to suffice in corrosion stress-induced environments. They don’t easily dissociate or deform under any temperatures. The SB 163 N04400 grade is designed with superior strength and excellent mechanical properties. They possess a minimum tensile strength of 550Mpa and a minimum yield strength of 240Mpa. The products from this grade can be easily elongated by 40%.
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 |
Tube Pressure Rating
Tube O.D. | 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 | |||
Industries where G-Type Finned Tubes are used
1. Rubber plants
2. Power plants
3. Petroleum industries
4. Chemical industries
Other 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.
