Titanium coils produced by bending titanium tubes. The internal titanium coil tubing of titanium tube heat exchanger is made by processing and bending pure titanium seamless tube. The titanium tube has the advantages of super corrosion resistance, good heat resistance, superior machining performance, good thermal conductivity, high heat exchange efficiency, non-toxic, non-magnetic, will not react with chloride ions in water, no pollution medium, not easy to scale, strong bearing capacity and so on. Titanium heat exchanger is widely used in seafood breeding, sea water heat exchange, salt water heat exchange,marine engineering chemical industry, metallurgy, refrigeration, light industry, electroplating industry, aluminum oxidation tank, salt making, paper making, ultrasonic, electronic communication, central heating and other industries and fields.