... Q405,etc. manufactures steel grating mesh ISO9001/2000 1.galvanized Steel Grating Materials:Q235, A36, etc. ... ventilation of light and wind, a modern sense, aesthetic appearance and anti-skid. It is also easy to ... : 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4 ... , hot dipped galvanising, paint6StandardChina: YB/T 4001.1-2007USA: ANSI/NAAMM(MBG531-88)UK: BS4592-1987Australia ...