... safety,easy to clean 3)Easy to install Stainless Bar Steel Grating ISO9001:2008 Galvanized Steel GalvanizedProduct IntroductionSteel grating ... -proof performance, etc.galvanized steel gratingApplication Specification Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, 25X3, 25X4, ... 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30, 30.6, 32. ...