1.steel grating 2.Bar:30,40mm,60mm 3.Cross bar:6mm 4. ... 3mm,40mm,60mm or according to your requirement Cross bar pitch:30mm,38.1mm,50mm,100mm or according to your ... serrated Standard:ANSI/NAAMM(MBG531-88),BS4592-1987,AS1657-1985 2.Types: Plain Style Steel Grating, Serrated Style Steel Grating ... of high medium and low quality for you to choose 2)HOT!hot dip galvanized steel grating/floor grating/steel ...