... .94, Φ9.52, Φ12.7mm, etc. inner grooved or smooth tube.Aluminium foil: hydrophilic or bareFin type: louver fin, flat fin, corrugated ... .627.5Tube MaterialCopper, Aluminium Copper, Aluminium Copper, Aluminium CopperCopperType of TubeSmooth Tube, Inner Grooved TubeSmooth Tube, Inner Grooved TubeSmooth Tube, Inner Grooved TubeSmooth Tube, Inner Grooved TubeSmooth ...