... Name: Gr2 ASTMB 338 Titanium Tube for Heat Exchanger Dia:3-130mm , wt : 0.2-4.5mm 2. Technique:Seamless 3 . Standard : ASTM ... 5, GR.7, GR.9, GR12Seamless titanium and titanium alloy pipesDIN 178613.7035, 3.7105Seamless circular titanium and titanium alloy pipesGB/T 3624TA1, TA2 ... etc. Each year, we export more than 80MT titanium tube to grade 2, grade 7 and grade 12 to USA, Qatar, Canada, Germany, ...