Molded grating is manufactured through a molding process utilizing a closed mold. In this method, a mixture of thermosetting resin (typically polyester, vinyl ester, or phenolic) and continuous fiberglass rovings is carefully prepared. This resin-fiberglass composite is then placed within a closed mold designed with the desired grating pattern. Pressure is applied to consolidate the materials, and the grating panel cures within the sealed mold. After curing, the molded grating is demolded, trimmed to size, and undergoes quality checks before being prepared for use. This process is ideal for creating corrosion-resistant and lightweight grating panels

Pultruded grating is produced using a pultrusion process involving a die. In this technique, continuous glass fibers are pulled through a resin bath, where they become impregnated with a thermosetting resin (commonly polyester, vinyl ester, or phenolic). The resin-soaked fibers are then drawn through a heated die, where they are cured and shaped into the desired grating profile, often characterized by a grid or lattice pattern. The resulting pultruded grating exhibits exceptional strength, corrosion resistance, and a lightweight design. This method is particularly suitable for heavy-duty applications and environments requiring high-performance grating.