... B861,ASME SB861 1. Product Name: Gr2 ASTMB 338 Titanium Tube for Heat Exchanger Dia:3-130mm , wt : 0.2-4.5mm 2 ... SB338GR.2, GR.7, GR.9, GR12Titanium and titanium alloy tubes for condensers and heat exchangersASME SB337GR.2, GR.7, GR.9, ... , Ocean antisepsis, medical/surgical applications, recreation equipment, petrochemical and heat exchange projects.ect Gr2 ASTM B338 Titanium Tubes for Heat Exchanger