... 1 1/2''x1/8'' etc2Bearing Bar Pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32 ... , SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, painted, spray coating 6Grating StylePlain / Smooth, Serrated /teeth ... BS4592-1987, Australia: AS1657-1985, Japan:JIS galvanized iron floor grating,galvanized steel ladder.serrated bar grating,galv serrated grating,anti ...