... hot dip Galvanizingand stainless grating flooring walkway, platform and steel structures, stair tread, well cover, trench cover, compound gratings ... , America standard is available.4) Material:Mild Steel (Low Carbon Steel) or Stainless Steel5) Surface Treatment:Untreated, Painting ... or Hot dip Galvanizing6) Steel grating standards:A) China: YB/T4001-1998B) USA: ...