... .52, Φ12.7mm, etc. inner grooved or smooth tube.3. Aluminium foil: hydrophilic or bare4. Fin type: louver fin, ... Aluminium Copper, Aluminium Copper, Aluminium CopperCopperType of Tube Smooth Tube, Inner Grooved Tube Smooth Tube, Inner Grooved Tube Smooth Tube, Inner Grooved Tube Smooth Tube, Inner Grooved Tube Smooth Tube ... and perfect delivery date. shell and tube heat exchanger for air conditioning