... .ISO9000:2008 management 2.Sinosteel-Fortune 500 3.US, UK or Australian std. 4.independent AutoCAD design 5.ASTM A36 steel Standard ... Grating Panels Sizes in inch: 3x12, 3x20, 3x24 Standard Steel Grating Panels Sizes in mm: 1000x5800mm, 1000x6000mm, 914.4x6096mm, ... : 38.1mm, 50mm, 75mm, and 100mm,101.6mm(4").5.Standard Grating Panels Sizes: 3'x12', 3'x20', 3'x24'.6 ...