Internally Finned Tubes

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Internally Finned Tubes / Internally Fin Tubes / Internally Grooved Tubes / Dx Tubes / Evaporator Tubes Manufacturer, Supplier And Exporter

Corrugated Finned Tubes

Tube Tech is a leading manufacture and supplier of Internally Finned Tubes / Internally Fin tubes or Dx Tubes or Internally Grooved Tubes with plain outer surface and internal ridges as per the requirement of the Customer for Direct Expansion Shell and Tube Liquid Coolers. Internally Grooved Tubes are seamless drawn high-performance tube in copper tube material.

The internally enhanced fin tubes manufactured by Tube Tech are designed to provide maximum heat transfer with minimum refrigerant side pressure drop. The inside heat transfer coefficient of these tubes is generally 2 to 3 times greater than coefficient for smooth surface tubes. These internally finned tubes are available in tube materials Copper UNS C 12200 & 90/10 Cupro Nickel UNS C 70600.

Tube Dia Wall Thickness No Of Ridges Helix Angle (0) Ridge Height Inside Surface Area (m2/m
12.7 mm 0.8 mm 50 18 0.25 mm 0.035
12.7 mm 0.8 mm 60 18 0.25 mm 0.037
12.7 mm 0.8 mm 75 18 0.25 mm 0.038
15.9 mm 0.8 mm 50 25 0.25 mm 0.044
15.9 mm 0.8 mm 60 25 0.25 mm 0.046
15.9 mm 0.8 mm 75 25 0.25 mm 0.047

Our Speciality


  • • Internally Finned tubes with wall thickness and internal ridge density other than mentioned above can be produced on request.
  • • Internally Finned tubes are produced in straight length up to 6mtrs. and more than 6mtrs. If required.
  • • Internally Finned Tubes are supplied with smooth ends.
  • •All the tubes are hydro tested at desired pressure after fining operation to ensure defect free products.

Application of Internally Grooved Tubes / Internally Finned Tubes / Dx Tubes

  • • Direct Application Chillers
  • • Dry Expansion Evaporators
  • • Air Conditioning Exchangers

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