Titanium and Titanium alloy Ring (Collar)1.Processing: Heat-treated, forged, Annealed, welding*****: Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr11, Gr123.Standard:ASTM B381, ASTM B8624.Specification(mm): ID OD Height WT 40~150 200~400 100~300 37~120 40~250 >400~700 150~500 100~160 40~300 >700~900...