... Fins Pitch: 4mm-30mm 3.Fins Height: 5mm-25mm Different functions of finned tube 1.G fin, L fin, LL fin, ... PRODUCTDESCRIPTIONTUBE MATERIALFIN MATERIALTUBE SIZEFIN SIZEHigh Finned TubeExtruded Fin TubeAll Kind of Material can be appliedAluminum A1050, A606115.88~50.87~11 ... 4012,16,19 28 FPI, etc.Turbo-C TubeTurbo-E TubeCorrugated TubeAll Kind of Material--6.35~402~9FPI Different functions of finned tube