Xinguangzheng Electric Steel Structure Staircase Hebei

   -  Xinguangzheng Electric Steel Structure Staircase Hebei -MaterialMild steel, carbon steelGradeQ235B, Q355StandardAISI, ASTM, BS, DIN, GB, JISSurface TreatmentPainting, hot galvanizingHeat TreatmentNormalization, annealing, quenching and temperingInspection100% dimension inspection and visual inspection, gas tight test before deli

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