Pultruded FRP grating products consists of continuous glass strands encased in resin and wrapped in a surfacing veil which protects the fibers and allows resin to saturate the outermost part of the bar as well as penetrate between the glass fibers. This ensures a smooth and corrosion-resistant surface, with a higher glass/resin ratio than molded products.
Pultruded grating has a unidirectional strength, with its much higher glass content resulting in a greater span capacity than molded products. This product is usually specified in applications requiring larger spans or heavier loading, i.e. in the offshore and transportation industry.