1.ISO9000 quality system. 2.professional supplier. 3.high quality and good price . 4.original factory ... NAAMM-MBG531, BS4592, AS1657, JS3101Grating Steel Material:Low Carbon Steel, Mild Steel, Grating Size:3'x20', 3'x24', 3'x30', 1000x1000, 1000x5800, 1000x6000mmGrating Material ... PaintingGrating Specification:19-w-4, 15-w-2, 30/100, 40/50, 60/100 and allGrating Application:steel platform, flooring and ...