... (tapered), flagpoles, curtain poles, umbrella rib. FRP Square Rods, Fiberglass Square Poles FRP rods are of long service life, light weight ... umbrella rib, cable pole, etc. Features of our pultruded FRP products:-Corrosion Resistant -Light Weight, High Strength and Impact & ... Maintenance -Fire Retardant -Dimensional Stability -Attractive, Design Flexibility FRP Square Rods, Fiberglass Square Poles