... 3. Material: Gr1,Gr2, Gr7, Gr9, etc Titanium tube /pipe for heat exchanger or condenserSPECIFICATIONMATERIALSize Range mmDESCRIPTIONGB/T3624TA1, TA2, TA9, TA10, TA18 5 ... , 3.71055~76Seamless Circular Titanium and Titanium Alloy Tubes Titanium tube /pipe for heat exchanger or condenser