nickel alloy steel pipe(825 tube) Standards: ASTM B161,163,165,167,407,444 Steel Grade: ALLOY200,400,600,625,800,800H,825 nickel alloy steel pipe(825 tube)Grade: Alloy 200, 400, 600, 625, 800, 800H, 825, 904LStandard: ASTM B 161, 163, 165, 167, 407, 444, 677.Size range:Outside diameter range from 10 to 219mm,Wall thickness range from 1 to 20mm Marking: JW, material grade, standard, specification, ...