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Payment Type: L/C,T/T
Transportation: Ocean,Land,Air,Express
Model No.: ASME SA179
Brand: YuHong Group
Status: New
Warranty Period: 3 Months
Applicable Industry: Construction Works, Manufacturing Plant
Out-of-warranty Service: Online Support
Video Factory Inspection: Provided
Mechanical Test Report: Provided
Marketing Type: Hot Product 2019
Place Of Origin: China
Types Of Parts: Finned Tube
Tube Specification: ASME SA179
Fin's Material: Aluminum 1060
Fin Height: ＜17mm
Fin Thickness: ~0.4mm
Product Name: Carbon Steel Embedded Fin Tube
Fin Type: Embedded/G-Fin
ASME SA179+AL1060 Carbon Steel Embedded G-Type Fin Tube For Heat Exchanger Application
What is G Type Finned Tube?
G type embedded spiral finned tube is processed from a certain width in the steel pipe and spiral groove depth, then inlays the ribbon on the steel pipe by the equipment. In winding process, as the pre-tightening force to a certain extent so the strip will be firmly in the spiral groove, to ensure there is a certain contact area between steel band and steel pipe. In order to prevent the strip spring falling off the light tube, the two ends of the steel strip need to weld onto the steel pipe. In order to set easily, there should be a certain clearance between steel belt and spiral groove. If the clearance is too small the setting process will be difficult to proceed smoothly. In addition, the steel belt of winding there will always be a certain amount of rebound, which makes it cannot very good joint among the steel belt and spiral groove bottom. Inlaid fins can be conducted on general equipment, and they cost little.
What are SA179 embedded fin tubes?
Embedded fin tubes can be manufactured using SA179 carbon steel tubes as the base material. In the case of SA179 embedded fin tubes, the fins are inserted or embedded into grooves on the outer surface of the tube. This type of fin tube is designed to increase the heat transfer surface area and enhance the heat exchange efficiency.
The embedded fins are typically made of materials such as aluminum or copper. They are tightly fitted into the grooves on the SA179 carbon steel tube, ensuring good thermal contact between the fins and the tube. This allows for efficient heat transfer between the fluids flowing inside the tube and the surrounding medium.
Chemical Composition of A179
| C | Mn | P≤ | S≤ | Si≤ |
| 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 | 0.25 |
Mechanical properties of A179
| Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | Hardness(HRB) |
| 325 Min | 180 Min | 35 Min | 72 max |
What are the characteristics of G-fin tubes?
-The heat transfer characteristics of G-fin tubes are related to the contact thermal resistance between the Finned Tubes, and the core of the contact thermal resistance is the contact pressure between them. Obviously, the heat transfer characteristics of welded chips and sleeves are better, followed by bimetallic pipes, with poor insertion and winding. After re curling, the contact area of the KLM finned tube increased by about 50% and was not affected by the outer diameter tolerance of the tube. After multiple cold cycles, the contact is good, the contact thermal resistance is small, and the heat transfer characteristics are high. The slotted finned tube can increase the disturbance of air flow and increase the total heat transfer coefficient by about 20%.
-As the wall temperature of the G-fin tubes with room temperature performance increases, the contact pressure between the pin and the tube changes, and the contact thermal resistance also changes. The fluctuation value depends on the type of finned tube and the initial contact pressure. As the temperature increases, the pin tension around the chip rapidly decreases, resulting in a rapid increase in contact thermal resistance. Bimetal rolling can maintain stability over a wide temperature range.
-The bare tube of the G-fin tubes is protected by the wing to prevent atmospheric corrosion. Due to different protection ranges, the ability of various types of finned tubes to resist atmospheric corrosion also varies. Among various finned tubes, bimetallic rolling is good. All finned tubes that have undergone hot-dip galvanizing treatment have good atmospheric corrosion resistance. Chemical plants with corrosive gases in the atmosphere should pay special attention to the selection of raw materials and types of finned tubes, as aluminum needles are prone to corrosion.
-In many operations of finned tubes, pressure is the material and wall thickness selected in the bottom tube, but it is also related to the type of finned tube. Rolling (bare tube made of aluminum copper material) has low pressure resistance and is not suitable for use in air coolers. The bottom tube of the embedded chip has a rolling groove, and the working pressure decreases with the increase of working temperature.
-Clean the dirt on the gas side of the dirty G-fin tubes, usually using compressed air, steam, or high-pressure water. In this way, the fins have corresponding stiffness.
-Manufacturing costs. From the perspective of raw material consumption of G-fin tubes, the circumference is low and the bimetallic rollers and sleeves are high. The consumption of bimetallic aluminum rolling is 1/3 to 1/2 more than that of wrapping. From the perspective of production and processing costs, the circumference is lower, the bimetallic rolling is higher, and the sleeve is higher. All finned tubes that require surface hot-dip galvanizing are relatively expensive in terms of raw material consumption or manufacturing process.
SA179 embedded fin tubes advantages:
The finned surface of the SA179 fin tube increases the surface area of the tube, which in turn increases the heat transfer rate. This design allows for efficient heat transfer even in applications where there is limited space for heat exchange. The embedded fins are tightly secured to the base tube, ensuring that they remain in place even under extreme conditions.
In addition to its high heat transfer efficiency, the SA179 Embedded Fin Tube is also easy to install and maintain. Its design allows for easy cleaning and inspection, reducing downtime and maintenance costs. The tube is also compatible with a wide range of fluids and gases, making it versatile and suitable for a variety of applications.
Application: Mainly used in petrochemical, electric power, paper, tobacco, building heating and other industries such as air cooler, air heater and food industry plant protein powder, starch and other spray drying system of air heaters.
| Selling Units | : | Kilogram |
|---|---|---|
| Package Type | : | Ply-Wooden Cases with Iron Frames |
| Picture Example | : |
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Packaging: Ply-Wooden Cases with Iron Frames
Productivity: 100 Tons Per Month
Transportation: Ocean,Land,Air,Express
Place of Origin: China
Supply Ability: According to Client's Requirements
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
HS Code: 8419909000
Payment Type: L/C,T/T
Incoterm: FOB,CFR,CIF,EXW,CIP,DDU,Express Delivery
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