Below is a list of Plastic Grating manufacturers from Los Alamitos, California. Plastic grating, most commonly made of fiber reinforced plastics, or fiberglass, is used in a wide variety of applications as an alternative for metal grates or grating. Plastic grating is able to meet the requirements for grating in chemical, refinery, pulp and paper, offshore and marine, water and waste water, electronics, food processing applications and more.