... 2.Technique:Forged,CNC Machined 3.Standard:ANSI165,JIS B2220, DIN 1.Grade:Gr1,Gr1,Gr2,Gr3,Gr4,Gr5,Gr7,Gr23 ... and good thermal stability7.Standard:ANSI165,JIS B2220,DIN26272628,GB/T 9116,ASTM B16.58.We can supply Material Quality List,Mechanical ... or alloy titaniumGrade Gr2,Gr3,Gr4,Gr5, etcStandardsASTM B381,ASTM B348,ASME SB348,ASTMF136,AMS 4928SpecificationOD:200~400mm , >400~700mm , >700~900mm , >900 ...