In the world of modern industry and construction, the need for strong, durable, and efficient materials is becoming increasingly important. One solution that is increasingly being used is Fiberglass Reinforced Plastic (FRP) Grating. However, not all FRP gratings are made in the same way. The two main types commonly used are Pultruded Grating and Molded Grating. Although they look similar, both have significant differences in terms of manufacturing process, performance, corrosion resistance, and installation efficiency.
1. Difference in Production Process
Pultruded Grating is produced through two main stages. First, the pultrusion process to form profiles with high strength. Second, the assembling process which includes cutting, drilling, and assembling according to the required panel size. The final result is a grating panel with a linear structure that is very strong, precise, and durable.
Molded Grating, on the other hand, is made through a molding process. Fiberglass and resin are mixed and then poured into a grid-shaped mold, then left to harden. This method is faster and more efficient, making it very suitable for projects with short deadlines without sacrificing quality.
2. Performance and Load Capacity
Pultruded Grating has high tensile strength in the direction of pultrusion due to the higher glass content. Therefore, it is very suitable for use in areas that require high structural strength.
Molded Grating is more flexible and has uniform strength in all directions, and its manufacturing process is more efficient, making it very suitable for short-term projects. In addition, it is suitable for chemical areas, platforms, walkways, trench covers, etc.
3. Corrosion Resistance
Both types of grating have a main advantage: resistance to corrosion. Both pultruded and molded grating are not affected by moisture, chemicals, or extreme environmental exposure. This makes them an ideal choice for the chemical industry, wastewater treatment, and coastal areas.
However, Molded Grating is generally more resistant to aggressive chemical exposure because its composition is fully integrated during the molding process. Meanwhile, Pultruded Grating excels in long-term mechanical durability, especially when used in outdoor structures.
4. Installation and Maintenance Efficiency
Pultruded Grating is usually lighter than metal, easy to cut as needed, and suitable for modular applications. Due to its precise design, installation can be faster and more efficient.
Molded Grating, although slightly heavier, offers ease of installation without requiring complex precision cutting. This makes it the right choice for large areas with uniform requirements.
As a trusted provider of FRP products in Indonesia, Origa Mulia FRP presents high-quality grating products designed to meet today’s industrial challenges. With high production standards and a focus on quality and durability, Origa Mulia FRP has become a partner in many projects in the manufacturing, construction, energy, and infrastructure sectors.
Choosing between pultruded and molded grating is not just a technical matter, but about understanding the specific needs of the project. If you need grating with high directional strength and precise structure, pultruded grating is the answer. However, if you need grating that is resistant to chemical exposure and suitable for general applications, molded grating can be the best choice.
Whatever your needs, Origa Mulia FRP is ready to provide the right FRP grating solution that is durable and efficient. Build your project with the right material and a trusted partner.