... 2.material: TA1,TA2,TA9,TA10,Gr1/2/5 titanium hollow forged goodtitanium alloy flangestandard: GB/T,GJB,ASTM,ASM,DINmaterial ... 35mm to 250mm 100mm-900mm is the inside diameter the outside diameter is up to 1300mm c. specification: PNO.6-PN26MPa ... license2.our flange diameter is special big3.timely delivery titanium hollow forged good