astm b338 titanium tubing grade 2 ASTMB337,ASTMB338 Material:Gr1,Gr2,Gr3,Gr5 5- ... 110x0.4~6.0x2000-9000mm ISO9001:2008 astm b338 titanium tubing grade 2 Standard: ASTMB337, ASTMB338, GB/T3624-1995, GB/T3625 ... exchanger, condenser, and transport pipeline etc.Product packaging show: Our internal filling material is like Photo 1, not Photo 2.