... ,625,800,800H,825 nickel alloy steel pipe(825 tube)Grade: Alloy 200, 400, 600, 625, 800, 800H, 825, ... Wall thickness range from 1 to 20mm Marking: JW, material grade, standard, specification, heat no.Length: unbending length or fix ... party inspectionBright annealed, polished outside and inside surface Chemical composition GradeChemical CompositionC maxSi maxMn maxP maxS maxNiCrMoTi2000.150.350.35 ...