... : 4mm-30mm 3.Fins Height: 5mm-25mm heat exchanger extruded finned tube 1.G fin, L fin, LL fin, ... 70~50.87~11.5FPIFin Height Max 16mmHG-Fin Tube (Imbeded Type)Aluminum A1100, A1050, A1060High Frequency Welded ... Alloy TubeMonometallic Fin TubeLow Fin TubeCarbon Steel, stainless steel, titanium, copper, brass, nickel alloy, etc.--9.52~4012 ... of Material--6.35~402~9FPI heat exchanger extruded finned tube