... hengzhou 's steel grating can be used for drain covers ,ladders steps ,walkways grating ,platforms grating ,ditch grates ,sidwalks grating and flooring grating ect .it also ... so on .we offter the good products and best price .Grating Dimension Bearing bar pitch(mm)12.5, 15,25, 30 ... grates,fences,framedgrates,trash rack grates ,paint backing chambers…… galvanized drain cover grating