Helical Aluminum Inner Grooved Tube

Helical Aluminum Inner Grooved Tube is two times the heat transfer efficiency of traditional smooth aluminum tubing. maximum fin high 0.37mm that enhanced aluminum tube for high-fin density condensers and evaporators in use.

The inner grooves improve heat transfer, offering higher efficiency and easy to form and bend.


Alloy grade

3003, 3103


O, H12, H14

Salt Spray

1000 hours above

Fin type


Helix angle



MIN: φ5.0mm OD x 0.36mm WT
MAX: φ35mm OD x 2.70mm WT

Products Details

The aluminum inner grooved tube has been optimized to improve heat transfer,  the heat transfer coefficient of the inner grooved tube is two times what can be achieved with traditional smooth aluminum tubes.

Different grooves’ depth and geometry satisfy the specific regional requirements and refrigerants in use. Our Maximum inner high fin 0.37mm, but the regular inner groove tube just between 0.1-0.18mm.


  • Alloy grade: 3003 and 3103
  • Tensile strength: >120MPA
  • Elongation:>30%
  • Slat spray: more than 1000 hours
  • Maximum high fin 0.37mm
  • Very high heat transfer efficiency

Our Services

OEM & ODM Available

We provide any form of ODM&OEM requirement service, Different outside diameter, and high fins.

Technical Solution

We have strict quality control and provide tooling test and technical drawings solutions to satisfied with special needs. 

Aluminumhvac offers us a good solution for our heat exchanger, we require an outside diameter of 5.0mm with the fin high 0.37mm, which enhance heat transfer efficiency.

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@granahvac.com”