... , Mild Steel Custom Size Are Acceptable Steel Grating, Bar Grating, Serrated Steel Bar Grating, Flooring GratingMaterial:Mild steel: ASTM A36, BS4360 ... , JIS G3101 &SS400Stainless steel: SUS 304& SUS 316Type: plain, serrated, I, press-lockedSurface treatment: painted, galvanized, untreatedStandard of steel grating ...