... price Description of serrated steel grating,flooring grating,drain cover,trench cover, galvanized steel grating,bar gratingSerrated Style Steel Grating,black grating:We own several advanced steel ... , 100, 101.6Thickness(mm)3mm ,4mm, 5mmMaterialQ235,SS304,SS316Surface treatmentBlack , hot dip galvanizing,paintFields of ApplicationPlatforms ,sidwalks,filter grates,ventilation grates ...