FRP Manhole Cover

FRP Is a composite material made of a polymer matrix reinforced with fibers. The fibers are usually glass fibers, the polymer is usually an epoxy, vinylester or polyester thermosetting plastic, and phenolformaldehyde resins are still in use. FRP’s are commonly used in the aerospace, automotive, marine,construction industries and ballistic armor.FRP allows the alignment of the glass fibers to suit specific design programs. Specifying the orientation of reinforcing fibers can increase the strength and resistance to deformation of the polymer. Glassreinforced polymers are the strongest and most resistive to deforming forces when the polymers fibers are being exerted with a parallel force.