Geëxtrudeerde vinbuis

Geëxtrudeerde vinbuis wordt gerold als een integriteit zonder thermische contactweerstand, hoge intensiteit, Gekenmerkt in thermische schok en mechanische schokbestendigheid. Warmtewisselaars geassembleerd met dit soort vinbuis (geëxtrudeerd vintype) is veel beter dan degene die is uitgerust met snaarvinbuizen of hectisch opgewonden vinbuizen (L/LL/KL type vin).

Geëxtrudeerde Finned Tubes, ook bekend als "Integral Finned Tubes". Geïntegreerde vinnenbuizen worden vervaardigd door walsproces op buizen. Tijdens het vinnen, De binnendiameter van de buizen wordt verkleind en spiraalvormige vinnen worden op de buiswand gerold. Het materiaal van de buizen kan koperlegering zijn, Messing legeringen, Kopernikkellegering, Titanium legering, Edelstaal, Duplex roestvrij staal etc. De druk die nodig is om de vinnen uit de aluminium huls te extruderen, creëert een uitstekende "drukverbinding" tussen de twee materialen.

Koperen en aluminium samengestelde vinbuizen worden gerold uit een koperen buis met muff, bevoordeeld in strakke link, kleine thermische weerstand, goede warmteoverdrachtsefficiëntie, klein stromingsverlies en sterke corrosiebestendigheid. Bij langdurig werken onder verwarmings- en koelomstandigheden, Ze zijn duurzaam en niet gemakkelijk te vervormen.

De geïntegreerde geëxtrudeerde vinbuizen zijn glad op het oppervlak en gemakkelijk te reinigen. Bij natte koeling in verwarmings- en airconditioningproject, Het is gemakkelijk om het condenswater op het buitenoppervlak van de vin te verwijderen, En het is niet gemakkelijk om te stofzuigen en te schalen in de verwarming en andere warmte-uitwisseling.

  • Beschrijving
  • Product Details
  • Onderzoek

Extruded Finned Tubes Product Range

Geëxtrudeerde Finned Tubes, ook bekend als "Integral Finned Tubes". Geïntegreerde vinnenbuizen worden vervaardigd door walsproces op buizen. Tijdens het vinnen, De binnendiameter van de buizen wordt verkleind en spiraalvormige vinnen worden op de buiswand gerold.

Integral Low Finned Tubes

  • These have fin height less than or equal to fin pitch.
  • Tube Length: Up to 32 meter.
  • Outside Diameter OD: Between 9.52 mm and 38.10 Mm.
  • Tube Wall Thickness WT: 0.58 Mm (Min) and above.
  • Fins per Inch: 11, 16, 19, 23, 26, 30, 40 en 52 FPI.
  • Available in ferrous and nonferrous materials Copper Alloys, Copper-Nickel alloy, Admiralty Brass Alloy C44300, Aluminum Brass Alloy C68700, Koolstofstaal.

Integral Medium High Finned Tubes

  • Fin height more than fin pitch.
  • Tube Length: Up to 32 meter.
  • Buitendiameter: Between 19.05 mm and 31.75 Mm.
  • Tube wall thickness: 2.1 Mm (Min) and above.
  • Fins per Inch: 11, 16 en 19 FPI.
  • Available in ferrous and nonferrous materials.

Low Finned U Bend Tubes

  • Manufactured on in-house finned tube bending facility.
  • Easy to install in the equipment maintaining the circulation ratio.
  • Absorb thermal shocks in heat exchanger.
  • Available in Copper Alloys, Copper-Nickel alloy, Admiralty Brass Alloy C44300, Aluminum Brass Alloy C68700, Koolstofstaal, 304 and 304L Stainless Steel ranging from 30R to 710R.

Low finned tubes with internal rib

  • Externally enhanced surface area with integrally helical ribs on the inner side.
  • Improved inside heat transfer coefficient.
  • Available in Copper, Kopernikkellegering, Carbon Steel with externally 19, 26 fins per inch and internally 8, 10 Ribs.

Low Finned Tubes Coils

  • Manufactured by coiling the integral finned tube.
  • Improved heat transfer area therefore compact size of heat exchangers.
  • Available in Copper, in coil diameters as per user’s requirement (Min Coil ID 50 Mm).

High Finned Tubes

  • High Finned Tubes have extruded fin heights up to 0.625″ (16Mm). Single metal and bi-metallic finned tubes are available. Bi-metal finned tubes have a separate alloy liner tube inside the extruded fins. The mono-metal finned tubes have no liner tube with the fins integral with the tube.

Corrugated Tubes

  • Manufactured by corrugation process of indenting plain tube with smooth and uniform spiral projections, which generate turbulence in both outside and inside media.
  • Higher turbulence ensures uniform temperature distribution.
  • No thinning of tube wall during process of corrugation.

Extruded Finned Tubes Characteristics

  • Heat transfer per meter of tube on the outside is equal to the heat transfer per meter on the inside.
  • The intermediate un-finned section and un-finned sections at both ends help to slip the integral finned tubes in to the tube-sheets of shell and tube heat exchanger in a manner similar to plain tubes.

Extruded Finned Tubes Benefits

  • Combination of lower fin height and more fins per meter maintains the general ratio of 1:1 fin height to fin spacing.
  • Doesn’t require higher tube pitch therefore, doesn’t require shell size higher than shell of bare tube heat exchanger.
  • Improved heat transfer coefficient and rate of heat transfer as compared to conventional finned tube designs.
  • Compact design of heat exchanger having lesser weight and size.
  • Improved tube life.

Extruded Finned Tubes Quality Assurance

  • Compliance with quality standards, ASME SB111, SB-359, SA-213, SA-450 and all codes as per ASME /EN/ JS.
  • Customer / Third Party Inspection TPI.
  • Fin dimensions checking by IMTEs and Profile checking on profile projector.
  • Stress Relief Annealing of non-ferrous fin tube on in-house electric conveyor belt furnace.
  • Stress relief annealing of ferrous fin tubes as per specifications provided if required by client at additional cost.
  • 100% tubes tested for leakages by Hydrostatic Test as per standard and customers requirements.
  • Third Party Inspection can be offered from Lloyd’s, BV, Tuv, BHEL, NTPC, Intertek, Sgs, EIL, IBR etc. volgens de eis van de klant.

Extruded Finned Tubes Applications

  • HVAC & Ketel
  • Centrales
  • Heat Recovery Steam Generators
  • Petrochemical Industries
  • Marine Applications
  • Refrigeration Applications
  • Economizers
  • Oil and Gas Coolers
  • Plumbing and Air Conditioning
  • Condensers and Evaporators
  • Shell and Tube Heat Exchanger
  • Other various Heat exchanger applications

Fin tube reference

Carbon steel fins are available on carbon, stainless steel, or copper tube. Please call for a specific size if not listed

Type Beschrijving Base tube
O.D. (Mm)
Fin specification (Mm)
Fin pitch Fin height Fin thick
Embedded G-type fin tueb 16-63 2.1-5 <17 ~0,4
Extruded Single metal combined metal 8-51 1.6-10 <17 0.2-0.4
Low fin tube t-type fin tube 10-38 0.6-2 <1.6 ~0.3
Bamboo tube corrugated tube 16-51 8-30 <2.5 /
Wound l/kl/ll type fin tube 16-63 2.1-5 <17 ~0,4
String String fin tube 25-38 2.1-3.5 <20 0.2-0.5
U-type U-type tube 16-38 / / /
Lassen HF-welding fin tube 16-219 3-25 5-30 0.8-3
H/HH type fin tube 25-63 8-30 <200 1.5-3.5
Studed fin tube 25-219 8-30 5-35 φ5-20

According to user needs, we can produce all kinds of steel strip winding finned tube and steel aluminum composite finned tube.

Materials

Carbon steel fins are available on carbon, stainless steel, or copper tube. Please call for a specific size if not listed

We offer you a broad portfolio of materials and can expand our offering at any time to meet your specific needs regarding thermal conductivity, Mechanische eigenschappen, or corrosion resistance.

  • Base tube: Carbon steel, Stainless steel, Copper, Cupro Nickel, Aluminium, Gelegeerd staal
  • Fin: Carbon steel, Stainless steel, Copper, Aluminium
  • Rings: Carbon steel, Aluminium, Hot dip galvanizing

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