... Astm B 337/338, GB/T3624/3625 2.origine: Baoji city,Shaanxi,China 3.Grade: Gr1,Gr2,Gr3,Gr4,Gr7,Gr9 ... Grade:Gr1,Gr2,Gr3,Gr4,Gr7,Gr9,GR11Standard:ASTM B 337 ,ASTM B338, ASTM B861OD: 3 ... . offshore aquaculture Item Namegr9 titanium pipe Grade of materialGr1 Gr2 Gr9 TA1 TA2 TC4Dimmension (MM)OD10 ... of corrosive fluid transmission pipeline system(3)Titanium bicycle tube, automobile exhaust pipe(4) ...