... bar spacing and open area.2.Pultrusion FRP Grating Typical FeaturesCorrosion ResistantSlip ResistantFire RetardantHigh Strength-to- ... ConductiveLow Installation CostLong Service LifeSuperior Ergonomics3.FRP Grating Excellent Properties As Follows:(1).Safety:FRP ... 3.Surface Treatment Smooth surface grating,Concave surface grating, Microvoid grating, Sandy grating,Cover board gratin,Transparent gratinga) ...