... DurabilitySuperior durability to Stainless Steel, Aluminum, and Galvanized Gratings, especially in highly corrosive environments. Strength50% higher tensile ... DurabilitySuperior durability to Stainless Steel, Aluminum, and Galvanized Gratings, especially in highly corrosive environments. Strength50% higher tensile ... cutting or “short pouring”. . molded grating,GRP,FRP,Fiberglass grating pass ISO9001