... Fins Pitch: 4mm-30mm 3.Fins Height: 5mm-25mm finned tube making machine 1.G fin, L fin, LL fin, I fin, ... C122012.70~50.87~11.5FPIFin Height Max 16mmHG-Fin Tube (Imbeded Type)Aluminum A1100, A1050, A1060High Frequency Welded Finned ... , stainless steel, titanium, copper, brass, nickel alloy, etc.--9.52~4012,16,19 28 FPI, etc.Turbo-C TubeTurbo ... Kind of Material--6.35~402~9FPI finned tube making machine