Titanium flange: 1.Grade:Gr1,Gr1,Gr2,Gr3,Gr4,Gr5,Gr7,Gr23 ... alloy titaniumGrade Gr2,Gr3,Gr4,Gr5, etcStandardsASTM B381,ASTM B348,ASME SB348,ASTMF136,AMS 4928SpecificationOD:200~400mm , >400~700mm , >700~900mm ... .Slip On Flangeb.Welding Neck Flangec.Threaded Flange(Screwed Flange)d.Plain Flange e.Blind Flange f.Lap Joint Flangeg.Wocket Welding Flange3.Available ...