Titanium heat exchanger as well as various titanium products : especially suitable for aquaculture seafood and chemical plating and other industries, and is suitable for various industrial, marine aquaculture water chiller, heat pump, water heater heating. The enclosure material PVC plastic tubes welded together, the height can be randomly assembled change. Has the good leak-proof. Barrel heat exchanger for pure titanium production, with a superior corrosion resistance.