| 产品名称 | G-type Finned Tube | 管道标准： | ASME SB163 |
|---|---|---|---|
| 管道材料： | Monel 400 (UNS N04400) | 类型 | G 型 |
| 管外径 | 20mm To 219mm OD Max. | 管材厚度： | 2 毫米至 16 毫米 |
| 管道长度： | 可定制 | 鳍片材料 | Carbon Steel， Stainless Steel， Alloy Steel， Corten Steel， Duplex Steel And Incolloy. |
| 鳍片厚度： | 0.8 毫米至 4 毫米 | 鳍片高度： | 0.25′（6.35 毫米）至 1.5′（38 毫米） |
| 鳍片密度： | 每米 43 鳍至最多每米 287 鳍 | ||
| 强光 | MONEL 400 Finned Tube， ASME SB163 Finned Tube， MONEL 400 Finned Pipe | ||
ASME SB163 UNS N04400 Monel 400 G Type Finned Tube For Heat Exchanger Application
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.
技术细节/基管细节
钢管直径：最小外径 20 毫米，最大外径 219 毫米。
管材厚度：最小 2 毫米，最大 16 毫米
钢管材料：碳钢、不锈钢、合金钢、Corten 钢、双相钢、超级双相钢、镍钴合金、高铬高镍和镍钴合金、CK 20 材料及其他材料。
如需快速报价，请注明以下要求：
Number of pieces
基管：直径、厚度、长度和材料规格。
翅片：材料规格、类型（实心或锯齿形）、高度、厚度、间距、翅片长度和无翅片部分。如有需要，请提供焊接预处理细节。
所需的交货期。
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%.
蒙乃尔 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.
Tube Chemical Composition
| 等级 | C | 锰 | Si | S | 铜 | 铁 | 倪 | Cr |
| 蒙乃尔 400 | 0.30 最大值 | 最多 2.00 | 最大 0.50 | 0.24max | 28.0-34.0 | 最高 2.50 | 63.00 分钟 | - |
Tube Mechanical Properties
| 要素 | 密度 | 熔点 | 拉伸强度 | 屈服强度（0.2%Offset） | 伸长率 |
| 蒙乃尔 400 | 8.8 克/立方厘米 | 1350°C (2460°F) | Psi - 80，000 ， MPa - 550 | Psi - 35，000 ， MPa - 240 | 40 % |
Tube Physical Properties
| 属性 | 公制 | 帝国 |
|---|---|---|
| 密度 | 8.8 克/立方厘米 | 0.318 磅/英寸3 |
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 | |||
Advantage of Fin Tube
By not using a finned tube the outside surface area is not significantly greater than the inside surface area. Because of that， the fluid with the lowest heat transfer coefficient will dictate the overall heat transfer rate. When the heat transfer coefficient of the fluid inside the tube is several times larger than that of the fluid outside the tube the overall heat transfer rate can be greatly improved by increasing the outside surface area of the tube.
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.
Industries where G-Type Finned Tubes are used
1. Rubber plants
2. Power plants
3. Petroleum industries
4. Chemical industries
Other Applications
1.海洋工程。
2.化工和碳氢化合物加工设备。
3.汽油箱和淡水箱。
4.原油蒸馏器。
5.除气加热器。
6.锅炉给水加热器和其他热交换器。
7.阀门、泵、轴、配件和紧固件。
8.工业热交换器。
9.氯化溶剂。
10.原油蒸馏塔。
