... °CBase Tube Diameter : 5/8 to 3 (15.8 mm to 76.2 mm)Tube Material : Carbon Steel, Stainless Steel, Copper, Cupro-NickelFin ... , Stainless Steel, Copper, Aluminium, BrassFin Height : ¼ to ¾ 6.4 mm to 20 mm.Fin Pitch : 3fins/inch to 11 fins/ inch 118 ...