... strength and the toughness are much higher than cast iron. Can be used for terminals, airport and other large-span and ... on their own.Galvanized: Hot Dip Galvanizing can give a hygienic and clean maintenance free bright finish..Advantage :Steel grating has a ... etc. 3Twisted Cross Bar Pitch38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc 4Material GradeASTM A36, A1011 ...