centrifugal cast reformer tube 1.Standard:ASME,ASTM 2.Material:ZG45Ni35Cr25NbMA,G1.4852, 3.Petrochemical ... GradeC Si MnCr Ni Nb PSOtherZG45Ni35Cr25Nb+Microalloy0.40-0.50<=1.5<=1.023.0-27.033.0-37.00.7 ... :ANSI,ASTM,ASME ,GB2.Material:ZG45Ni35Cr25NbM, HP+Nb(MA),G4852,1.48523.OD:50-1000mm,Length:<5000mm4.Process:centrifugal casting5.Quality: ...