... , 40x100mm , so on 4)flat bar : 25x5mm , 30x5mm , 40x5mm5)wire diameter : 6mm , 8mm and so on 6)surface treatment : hot ... galvanized , electrol galvanized , pary color , pvc coated and so onNo.ItemDescription1Bearing Bar25x3, 25x4, 25x4.5, 25x5, 30x3, ... painted, spray coating 6Grating StylePlain / Smooth, Serrated /teeth, I bar, serrated I bar 7StandardChina: YB/T 4001.1-2007, USA: ANSI/NAAMM( ...