... , aesthetic appearance and anti-skid. It is also easy to clean, easy to installation and durable service time for uses. 5 ... ,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35 ... -2007USA: ANSI/NAAMM(MBG531-88)UK: BS4592-1987Australia: AS1657-1985 23)HOT SELL!hot dipped galvanized steel grating manufacturer (10 years )