U Bending Low Finned Tube For Heat Exchangers
U Bending Low Finned Tubes are high-efficiency U Bending Low Finned Tubes rolled on the outer surface of U Bending heat exchange tubes to form threaded fins. U Bending Low Finned Tubes can be twisted and bent into various shapes. Shaped, square or serpentine configurations to take advantage of more limited spaces.
The fin pitch size of U Bending Low Finned Tubes needs to be determined according to the surface tension of the liquid and the shear force on the liquid film generated by the flow.
 
 
U Bending Low Finned Tube Quick Details:
Core tube material:
1. Carbon Steel: A106 / A179 /A192 / A210 etc...
2. Stainless Steel: TP304/304L,TP316/TP316L, TP347 etc...
3. Alloy Steel: P5,T5,P9,T9,T11,T22
Fin Material:
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
Tube/Pipe Size 1.00″ to 15.75″ OD
Fin Height 0.3mm to 49.50mm
Fin Segment Width 5/32″ or 5/16″
Fin Thickness 0.8 mm ~ 4.0 mm
Fin Pitch 1 to 20 fins per inch
Surface Protection: Both bare ends shall be zinc or aluminum metallized by electrospray arc system coating.
Accessories: Tube support boxes, clamps or spacer boxes (materials: aluminium, zinc and stainless steel).
 
Additional Info
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
 
 
The case of U Bending Low Finned Tube
   


We can customize U Bending Low Finned Tube according to your drawings
Example:

 
Manufacturing Process:
U Bending Low Finned Tubes are high-efficiency U Bending Low Finned Tubes rolled on the outer surface of U Bending heat exchange tubes to form threaded fins. U Bending Low Finned Tubes can be twisted and bent into various shapes. Shaped, square or serpentine configuration
 
Quality Control for U Bending Low Finned Tubes
The quality of U Bending Low Finned Tubes is assured by hydrostatic or pneumatic testing, eddy current testing and tensile testing to verify the mechanical bond between the inner tube and outer fins
 
 
Delivery conditions
Burr-free, dry and blown on the inside, U Bending Low Finned Tubes are varnished on the outside on both ends.
 
 
Features of U Bending Low Finned Tubes
U Bending Low Finned Tubes mainly rely on the outer ribbing of the tube (ribing coefficient is 2~3) to expand the heat transfer area. Compared with the bare tube, it has a larger surface area with the same consumption of metal materials. Intuitively, it is the first time to strengthen heat transfer, but in essence, the increase of heat transfer area brings about the improvement of heat transfer coefficient. The heat transfer effect, the second strengthens the heat transfer. The main factors affecting the heat transfer enhancement of the ribbed surface are the height of the fin, the thickness of the fin, the distance between the fins and the thermal conductivity of the fin material. In addition, since one side of the heat transfer wall is expanded into a fin surface, the convective heat transfer on the smooth side and the thermal conductivity of the base wall all have a certain influence on the total heat transfer.
 
 
Application
U Bending Low Finned Tubes are often used in air coolers, process cooling, lube oil cooling, heat exchangers, steam air heaters, economizers, gas compressor waste incinerators, blast furnaces/rotary furnaces, etc.