1Standard: ASME B16.9,ASTM B363,DIN 2.Material: Gr1,Gr2,Gr3,Gr4,Gr5,Gr7, ... ,Gr3,Gr4,Gr5,Gr7,Gr9,Gr12,Gr23 3. Standard:ASTM B336,ASTM B337,ASTM B861,ASTM B862,ANSI B16.9 4. Size:Degree:45D ... .5 V 3.5-4.5 2.0-3.0 ASTM B363 90 Degree Titanium Elbow for Chemical Use