Spiral fin tube use carbon steel or stainless steel strip direct spiral in tube surface for improving heat transfer efficiency.Fin bottom touch tube surface but not bonded together,keep by Tension of the steel belt itself, both end fins can be permanently bonded to the tube by using solder.Cost is low than HFW fin tube.Also named Crimped fin tube.
Base tube of Crimped fin tube material:
stainless steel, carbon steel, copper alloy,alloy steel (No theoretical limit)
ASME SA213/ASTM A213 TP304/304L TP316/TP316L TP321 TP310S TP317,
ASME SA106/ASTM A106 Gr B Gr C,ASME SA179/ASTM A179,ASME SA192/ASTM A192
ASTM B111 C70600 C44300 C68700 C71500...
Fin material:
Carbon steel,stainless steel etc.
Stainless steel spiral fins tube, carbon steel crimped fins tube copper crimped Type fins tube Cu-Ni crimped fins tube,Aluminium brass crimped fins tube Copper-nickel spiral fins tube Duplex spiral Type fins tube super duplex spiral Type fins tube Air cooler fins tube, Air preheater fins tube.
Extruded fins tube Serrated fin tubes L Type fins tube G Type fins tube LL Type fins tube H Type fins tube KL Type fins tube HFW fin tube laser welded fin tube.
Base pipe O.D:15.88-165mm
Fin height:6-45mm
Fin thickness:0.3-1.2mm
Fin pitch: as customer's request.
End:Plain Ends, Beveled Ends
No fin area on both side:As Customer's request.
Application:
Air Cooler,Charge Air Chiller, Condenser,Evaporator, Fluid Cooler, Gas Cooler,Oil Cooler, Radiator, Refrigeration,Steam to Air Heat Exchanger,etc.
Package:
In bundles, plywood cases, wooden cases with water-proof package, etc.
High Frequency Welded fin tube also called solid type fin tube,use steel or stainless steel strip directly welded to tube surface by HFW.Can improving heat transfer efficiency much more than bare tube.Due to the tight welding of the fins to the base tube, these finned tubes are often used in vibrating conditions.Fin type have Serrated fin and flat fin.
L type fin tube, The fin is helically wound around the base tube forming a strong mechanical contact between the tube and fin, thus improving the heat transfer efficiency.Also named Wrap On fin tube. This also give considerable corrosion protection to the base tube.
KL type fin tube same as L fin tube,except that the base tube is knurled before application of the fin foot.Also named Wrap On Knurled type fin tube.After application,the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between fin and tube,Resulting in improved heat transfer efficiency.