... 3.trustly supplier hengzhou 's steel grating can be used for ladders ,walkways grating ,stainless platforms grating ,flooring grating ,ditch grates ,drain covers , stair ... on . we offter the excellent quality of stel grating and good price .Grating Dimension Bearing bar pitch(mm)12.5, 15,25 ... ,ditch grates,fences,framedgrates,trash rack grates ,paint backing chambers…… Security Galvanized clips grating