... explosion and other properties1.Material of steel bar grating: Mild Steel or Stainless Steel Weaving: plain weave, twill weave, ... , China (Mainland)Brand Name haotongModel Number1-6mMaterialcarbon steel or mild steelgrating standardYB/T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, ... JS3101Grating Steel Material:Low Carbon Steel, Mild Steel, Grating Size:3'x20', 3'x24', 3'x30', ...