1.ASTM B338, B337,ASTM B861/ B862 2. Gr1,Gr2,Gr3, Gr5,Gr7, Gr9, Gr12 ... .ISO Titanium pipe/tube 1. Standards: ASTM B338/ASME SB338 /ASTM B337/ASME SB337 /ASTM B861/ASTM B862 GB/T 3624,GB/T 36252 ... down8.Quality Assurance:----According to globally recognized standards, such as ASTM, AMS, ASME,JIS,MIL...----Chemical composition, Mechanical properties, ultrasonic detection ...