... -30mm 3.Fins Height: 5mm-25mm heat exchanger extruded finned tube 1.G fin, L fin, LL fin, I fin, E fin, KL ... .88~50.87~11.5FPIFin Height Max 16mmHL-Fin Tube(Wrap On Type)All Kind of Material can be appliedCopper C1100, C122012 ... .87~11.5FPIFin Height Max 16mmHG-Fin Tube (Imbeded Type)Aluminum A1100, A1050, A1060High Frequency Welded Finned TubeCarbon Steel TubeCarbon Steel Tube12.70 ...