1.standard: 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: 3-114mmID:2.8-104mmWT:0.1-6.0mmLength:50mm-12000mm ,we can cut the length that you need.Used area:1. Heat exchangers and condensers2. all kinds of corrosive fluid transmission pipeline system.3. titanium ...