Standard:G/T16598 ASTM B381 AMS size:150-1300mm*100-900mm*40-400mm, Quality Cetificate:ISO 9001:2000 1.Titanium forge ringProducts name Gr 1,GR2,GR3,GR4 Titanium forge ring G/T16598 ASTM B381 AMS Size Outer Diameter:150-1300mm,Inside Diameter:100-900mm,Wall Thickness:40-400mm, Supply State MQuality Cetificate ISO 9001:2000Features 1)high strength.. 2)fine corrosion resistance.3)low density, light ...