... ,ASTM,ASME,DIN,GB 2.Material:Alloy Certification:ISO9001:2008 Big and Small Head Forge Piece1.Standard:ANSI,ASTM,ASME ,DIN ... ,GB2.Material: ZG14Cr20Ni32Nb3.Specifications: φ500/φ350 or as customers' requirement 4.Process:centrifugal casting5.Quality:can ... /C,T/T11.Application:Used for methanol production conversion furnace Big and Small Head Forge Piece