Flooring galvanized steel grating 1.Best price and quality 2.Machines:7 running lines 3.Product capacity: ... bar pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard ... : 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1 ... (MBG531-88)UK: BS4592-1987Australia: AS1657-1985 high quality and lower price Steel Grating,Stair tread (factory)