... 5mmMaterialQ235,SS304,SS316Surface treatmentBlack , hot dip galvanizing,paintFields of ApplicationPlatforms ,sidwalks,filter grates,ventilation grates,driling stages, ladder ... x 519301790162018401710155017101590144040 x 5228021201920218020301830203018901700 [super deal]serrated and black steel sheet,steel grating ,glavanized grating ,drain cover ,trench cover,walkwaygrating