... .Well insulated,low maintenance 4.25mm,mould grating Light Weight FRP Mould Grid The FRP mould grid adopts ... T material to crowd shaping as bearing the weight of materials,it is join material, through will ... pipe as so on. The weight of grid itself is very light,its specific gravity is 1/4 ... of good performance, resist to wear out.2. Light weight,high strength, bludgon to resist.3. Longevity of service ...