... dimension.1.1 Material Q235 , or other equivalent material1.2 Grating Conformity Standard: YB/T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, JS31011. ... and Administration Commission of the State Council in China (SASAC).Standard Description: NoItemDescription1Bearing bar25x3,25x4,30x3,30x4,30x5,32x5,40x5, ... UK: BS4592-1987Australia: AS1657-1985 Plain bar hot dip galvanized steel grating weight from Anping