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Stainless steel tube with copper fin is usually applied when the working environment is with corrosion and need better heat transfer efficiency.
As a good source of heat exchanger materials, copper material has been part of many essential areas, such as energy, heating and cooling, medical and mining, this is why many industries choose copper as fin material to improve the heat transfer efficiency.
According to different application, stainless steel tube with copper fin can have following fin shapes.
Extruded Fin
L foot tension fin
Embedded G Fin
Knurled Fin
Spiral Fin Coils
A brief introduction on different fin type fabrication
Extruded finned tubes are formed from an outer aluminium tube with a large wall thickness, which is aligned over an inner base tube. The two tubes are pushed through three arbors with rotating discs that literally squeeze or extrude the aluminium fins up and out of the muff material in a spiral shape in one operation. The base tube is stainless steel tube and fin material is copper C12200.
L foot tension fin is with copper fin strip folded into an L shape and then wound on the stainless steel tube surface under tight tension. The fin feet is joined and cover the full surface of tube surface.
Embedded G Fin is with copper strip tension wound and placed into a groove cut previously on the base tube stainless steel surface.
Knurled fin is with copper strip wrapped around the tube and the foot is rolled into the outer surface of the pre knurled stainless steel tube and secured at each end by staples
Spiral Fin Coils is with copper strip wrapped around the stainless steel tube with fins ends point welded at tube ends.
General dimensions on stainless steel tube with copper fin
Stainless Steel Tube Standard: ASTM A213/ A269/ A249
Stainless Steel Tube Grade: SS304, SS316, etc
Base Tube OD: 50.8mm Max
Tube Length: 10 meters max
Fin Height: 17.85mm Max
Fin Thickness: 0.4~0.6mm
Fin Pitch: 6~12FPI.
Package
Tube ends plain or beveled.
Tube ends with plastic cover
Pearl cotton between each fin tube layer to protect fin from damaging or deforming
Waterproof material such as transparent film or kraft paper protect fin tube from water
Seaworthy package wooden case or steel frame welded with plywood case.
Whatever the fin type of stainless steel tube with copper fin we produce, we will provide following documents to customers.
Raw material inspection, such as base tube, fin material aluminum muff tube, aluminum strip, steel strip, copper strip.
Bare tube and fin material certificate
Finished fin tube inspection report (visual inspection on surface and dimensions)
Package pictures
Questions about our company.
What is your main business?
A: Cangyang Thermal’s main business is fabricating different kinds of fin tube, such as extruded fin tube, L foot tension wrapped fin tube, Overlapped double L fin tube, Embedded G Fin Tube, High Frequency Solid Fin Tube, Serrated Fin Tube and laser welded fin tube.
What is your MOQ?
A: In fact we do not have a requirement on MOQ, we’d like help customers even if the quantity is not too many.
What is your payment term?
A: Usually we accept TT, LC.
What is your delivery time?
A: Usually it takes about 20-45 days from order date. It depends on the order details.
If we have stock, we can finish within 5 days.
Do you supply sample for free?
A: Samples in free cut can be provided, but with freight collected.
We welcome every customer to visit us.
