... 1-2007 1.Specifications:1)Galvanized steel grating 2)Metal grating 3)ASTM A123,SS400 4) ... .A leading professional producer, ISO9001-2000 COMPANY , GRATING SPECIALIST! No.ItemDescription1Bearing Bar25x3, 25x4, 25x4.5, ... Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, painted, spray coating ... reputation of our products: hot sale!!!bar grating