FRP grating machine 1.easy operate 2.anti-corrosion,electric insulution 3.high efficiency. FRP grating machine FRP Grating Feature:The FRP grating is integrally constructed for a high strength. The specific gravity is 1.8g/cm3. Its specific gravity is only 1/4 of steel, 2/3 of aluminium. FRP grating distributed evenly loading to all parts on it. The strength is 10 times as much as hard PVC, the ...