... square lattice with an iron and steel products, steel mesh monoblock Main use to do the ditch cover, steel ... ventilation, lighting, cooling, anti-skid, explosion and other properties1.Material of steel bar grating: Mild Steel or Stainless ... x30', 1000x1000, 1000x5800, 1000x6000mmGrating Material StandardASTM A36, A1011, A569, Q235Grating ProductsSteel Grating, plain and serrated grating, trench grate, ...