titanium flat flanges blind flange 1.standard: GB/T,GJB,ASTM,ASM,DIN 2. ... /2/5 3.customized as order titanium tube fittings flangestitanium blind flangetitanium alloy flangestandard: GB/T,GJB,ASTM,ASM,DINmaterial: TA1 ... 35mm to 250mm 100mm-900mm is the inside diameter the outside diameter is up to 1300mm c. specification: PNO.6-PN26MPa ...