This type of fin has a knurled L shape base and is fixed by pressure on the tube.

• Fin Materials: Aluminum, Copper
• Tube Materials: No limits
• Fin Thickness: Min: 300 µ  Max: 800µ
• MATERIAL COMBINATIONS
  Core Tube
  Carbon steels (ASTM A 179/ A 214, St 35.8,ect.), low-alloy steels, stainless steels, copper-nickel alloys, aluminium bronze, copper, nickel-alloys (Alloy 400, ext.), bimetal
  
  Fins: Aluminium ASTM B209 Al 1060; ASTM B209 Al 1100
  
  FIELDS OF APPLICATION
  . the petroleum, chemical and petrochemical process industries
  . natural gas treatment
  . the steel industry: blast furnace and converter systems
  . power generation: steam turbine exhaust condensing
  - contact condensing with cooling of circulating condensate
  - fossil and nuclear power plants
  . air conditioning (freon, ammonia, propane)
  . incineration of household refuse
  . compressor coolers, ect.
  
  MANUFACTURING PROCESS
  The manufacturing strip is folded to from an L shape and then wound around the base tube. The feet of the fins are joined together and cover the whole of the finned surface. Both lends are clamped down to avoid unrolling through damage.
  
  ADVANTAGES
  Economic This method of manufacturing enables us to place the finning on a very thin-walled tube with is particularly desirable when using noble alloys (titanium, stainless, copper, nickel).
  The tube can withstand a temperature of up to 130°C without the risk of atmospheric corrosion or thermal stress. L1 max. = 12 000 mm Fin Thickness = 0,3 - 0,4 mm Fa = Outer Tube Surface Area incl. Surface Area of Fins L2 max. = L1 -2t x = acc. to clients specification Fi = Interior Tube Surface Area per Meter (m2/m) FZR = Uncovered Tube Area between the fins 
  
  

   

  PRODUCT DESCRIPTION TUBE MATERIAL FIN  MATERIAL TUBE SIZE FIN SIZE High Fin Tube Extruded Fin Tube All Kind of Material can be applied Aluminum A1050, A6061 15.88~50.8 7~11.5Fins/Inch Fin Height Max 16mmH L-Fin Tube (Wrap On Type) All Kind of Material can be applied Copper C1100, C1220 12.70~50.8 7~11.5Fins/Inch Fin Height Max 16mmH G-Fin Tube (Imbedded Type) Aluminum A1100, A1050, A1060 High Frequency Welded Fin Tube Carbon Steel Tube Carbon Steel Tube 12.70~160 1.5~7Fins/Inch 0.8~3.2mm. Thickness Stainless Steel Tube Stainless Steel Tube Alloy Steel Material Alloy Steel Material Integral Copper & Copper Alloy High Fin Tube C12200, C11000, C70600 C12200, C11000, C70600 15.88~22.23 5~9Fins/Inch Max 12mm.H Oval Fin Tube Carbon Steel Tube Carbon Steel Tube All Size Available 5~15Fins/Inch Stainless Steel Tube Stainless Steel Tube Alloy Steel Material Copper &Copper Alloy Tube Alloy Steel Material Copper &Copper Alloy Tube Low Fin Tube Low Fin Tube All Kind of Material -- 9.52~40 19~54Fins/Inch Turbo-C Tube Turbo-E Tube Corrugated Tube All Kind of Material -- 6.35~40 2~9Fins/Inch Inner Ridged Tube C12200 -- 7.93~15.88 60~75Fins/Inch Flower Tube C12200 -- 16.0~19.0 12~15Fins/Inch   Spec. OD range mm Grade Chemical composition Cu % Sn % Al % Ni+Co % Pb % Fe % Zn % Mn % As % P % ASME SB111 4~200 C12200 ≥99.9 - - - - - - - - 0.015~0.040 4~60 C44300 70~73 0.9~1.2 - - ≤0.07 ≤0.06 Rem. - 0.02~0.06 - 4~60 C68700 76~79 - 1.8~2.5 - ≤0.07 ≤0.06 Rem. - 0.02~0.10 - 4~60 C70600 Rem. - - 9.0~11.0 ≤0.05 1.0~1.8 ≤1.0 ≤1.0 - - 4~60 C71500 Rem. - - 29.0~33.0 ≤0.05 0.4~1.0 ≤1.0 ≤1.0 - -