... :Gr1 Standard:ASTM B381 Gr1 Titanium Flange machine : 1.Grade:Gr1,Gr1,Gr2,Gr3,Gr4,Gr5,Gr7,Gr23 ... Flange(Screwed Flange)d.Plain Flange e.Blind Flange f.Lap Joint Flangeg.Wocket Welding Flange3.Available Material Chemical CompositionWelcome to ...