... 1.5'' 2'' 4) Corrosion resistance Pultrusion FRP Grating, FRP grating, GRP grating, glass fiber grating, fiber glass grating1)The fiberglass gratings are extensively applied ... boats and water treatment as the platform, ladder steps, gutter cover, bridge corridor and waste water trays2) Regular height: 1 ... , Corrosion resistance, Chemical resistance, Flexibility, Aging resistance Pultruded FRP Grating