How is nickel alloy tube with G fin Produced?
The base tube material is Alloy tube, such as Alloy 825 tube and UNS N04400 Monel 400 Tube. Then the fin strip is wound into a machined groove and securely locked into place by back filling with base tube material. This ensures that maximum heat transfer is maintained at high tube metal temperatures.
The manufacturing tool is made up of 2 non-cutting plates set at 90° to the axis of the base tubes (pipes) (core tube).The first plate effects a groove for metal spinning. The second directs the ribbon in the groove and sets the fin foot in the groove through pressure on the metal displaced for the groove. A similar plate made of tungsten carburate allows us to manufacture. G embedded fin tubes ( fin tubes )with base tubes (pipes) (core tube) made of austenitic steel or exotic alloys.
Tube Material
Seamless Carbon Steel. (such as SA179, SA192, SA106, SA213 T11, SA213 T5.)
Stainless Steel (SA213 TP304, SA213 TP316, Alloy 825, ASTM B163 N04400)
Copper (UNS C12200, C14200, C70600, CuNi 70/30, CuNi 90/10)
Titanium: (AB38 Gr.2)
Fin Material: Aluminum (Al1050, Al1060, Al1100) and Copper
Comparing with copper tube, carbon steel tube or normal stainless steel tube, nickel alloy
tube is with higher hardness, so the groove is not easy to make and production speed for
Alloy tube with G fin is slower than carbon steel tube with G Fin and also finning services
cost is higher.
Why choose Monel 400 Alloy Tube with G Fin?
Monel400 is a corrosion-resistant alloy with the largest amount, the widest application and excellent comprehensive performance. This alloy has excellent corrosion resistance inhydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance to hot concentrated lye. At the same time, it is also resistant to corrosion by neutral solutions, water, sea water, atmosphere, organic compounds, etc. An important feature of this alloy is that it generally does not produce stress corrosion cracks and has good cutting performance.
After finning services, the alloy tube with G finning services can have better heat transfer efficiency than normal straight plain tube, preferred by customers in air cooled heat exchanger design and manufacturing for oil and gas industry.
SA213 TP304 Tube with G-Wound Up Finned Tubes
Alloy 825 with Aluminum G Wound Type Fins
ASTM B163 N04400 with Grooved Fins
Advantages of G-Wound Up Finned Tubes
1) Thermal between the fin/tube wall contact is constant because of the setting and makes it possible to use a wall temperature of up to 400° C.
2) The fin is set throughout its length and consequently does unwind even when partially uprooted.
