G-type Embedded Fin Tube ASME SB163 Monel 400 Nickel Alloy Bare
Tube with Aluminum Fin
G-type embedded fin tube is a type of circumferentially finned tube
where the fin is mechanically embedded into a groove that is
ploughed into the tube and locked into place by rolls that force
the groove to tightly close around the fin base. We can supply the
G-Fin Tubes in the following combinations of Base Tube and Fin
Material:
Base Tube Material: Carbon Steel, Alloy Steel, Mild Steel, Stainless steel and tubes
manufactured by ERW or Seamless Process
Fin Material: Aluminum, Copper
What is G-Fin Tube or Embedded Fin Tube?
The embedded fin tube or G fin tube is an extended surface fin tube
where the fins are externally applied on the base tubes. A groove
is formed continuously on the base tube and the fin edge is
inserted in the groove. After the fin is inserted in the groove a
set of rollers is used to back fill the groove and the fin is then
securely embedded in the base tube.
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
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.
ASME SB163 UNS N04400 / Monel 400 Nickel Alloy Tube 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 | – |
ASME SB163 UNS N04400 / Monel 400 Nickel Alloy Tube 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 % |
ASME SB163 UNS N04400 / Monel 400 Nickel Alloy Tube Physical Properties
| Properties | Metric | Imperial |
|---|
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
ASME SB163 UNS N04400 / Monel 400 Nickel Alloy Tube 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.
11. Rubber plants
12. Power plants
13. Petroleum industries
14. Chemical industries
Finned tubes increase outside the surface area. By having a finned
tube in place, it increases the overall heat transfer rate. This
then decreases the total number of tubes required for a given
application which then also reduces overall equipment size and can
in the long-run decrease the cost of the project. In many
application cases, one finned tube replaces six or more bare tubes
at less than 1/3 the cost and 1/4 the volume.
For applications that involve the transfer of heat from a hot fluid
to a colder fluid through a tube wall, fin tubes are used. Usually,
for an air heat exchanger, where one of the fluids is air or some
other gas, the air side heat transfer coefficient will be much
lower, so additional heat transfer surface area or a fin tube
exchanger is very useful. The overall pattern flow of a finned tube
exchanger is often crossflow, however, it can also be parallel flow
or counterflow.
Fins are used to increase the effective surface area of heat
exchanger tubing. Furthermore, finned tubes are used when the heat
transfer coefficient on the outside of the tubes is appreciably
lower than that on the inside. In other words, heat transferred
from liquid to gas, vapor to gas, such as steam to air heat
exchanger, and thermic fluid to air heat exchanger.
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
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.
