titanium ring 1.Quick response(in 10hs) 2.Gr1,Gr2,Gr3,Gr5 3.Good quality&low price&quick delivery 4.ASTMB381 ProductSize(mm) Grade Nos. SpecificationOutsideDiameterInsideDiameterSectionHeightWallThicknessTitanium & Titanium Alloy RingsΦ200~400Φ100~30020~12040~150Gr1,Gr2,Gr3,Gr5 GB/T,ASTM,ASME,AMS,ISO,JIS,MILΦ400~700Φ150~50035~60040~250Φ700~1100Φ300~90045~60040~600