... 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>Hot-dipped galvanized,Painted,Untrea. Manufacturing ProcessSteel ... are widely used in various plants at home and abroad, like power plants, chemical plants, oil refinery, iron and steel works, machine factories, ... , spray coating 6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar 7StandardUSA: ANSI/NAAMM(MBG531-88),UK: BS4592-1987 ...