... range in type and dimention 2.applicable steel equipment 3.excellent quality of steel grating 4.reasonable price 1) Bearing ... of black panel is 7350mm.5) Materials: mild steel or stainless steel.6) Surface treatment: untreated, painting or hot dip ... of ApplicationPlatforms ,sidwalks,filter grates,ventilation grates,driling stages, ladder steps,ditch grates,fences,framedgrates,trash rack grates ,paint ...