GRP (Glass Reinforced Polymers) molded gratings have proven to be an excellent alternative to traditional metal and wooden gratings for industrial, commercial, and residential spaces. Their non-slip, lightweight, and corrosion-resistant properties make them a popular choice in various sectors, including chemical processing, offshore and marine, wastewater treatment, and construction.
In this article, we will delve into the technical specifications of GRP molded gratings, their benefits over traditional gratings, and factors that influence their selection.
1. Material Composition
GRP molded gratings are made from a combination of thermosetting resin, fiberglass rovings, and fillers. The right combination enhances the mechanical and chemical properties of the gratings, making them durable and resistant to chemicals, UV radiation, and fire. The resins commonly used in manufacturing GRP gratings include polyester, vinyl ester, and phenolic.
2. Size and Thickness
The size and thickness of GRP gratings are dependent on the intended application and load requirements. The thickness of the gratings ranges from 15mm to 50mm, while the standard panel sizes are 1.22m x 3.66m, 1.22m x 4.00m, and 1.50m x 4.00m. However, custom sizes can be manufactured to match specific requirements.
3. Load Capacity
GRP Molded gratings are designed to support a considerable amount of load, depending on the application. The load capacity is achieved by using the right thickness of the gratings and spacing between the bearing bars. The standard load capacity ranges between 2T/m² to 12T/m² for industrial applications, while for pedestrial applications, it’s around 1T/m².
4. Surface Types
GRP gratings can be customized with different surface types based on the intended application. The most common surface types include concave, gritted, and smooth. Gritted surfaces provide a slip-resistant surface, making them ideal for applications where there are spills or wet areas. Concave surfaces are ideal for areas that require drainage, while smooth surfaces work best in applications that involve rolling equipment.
5. Panel Colors
GRP gratings are available in various standard colors, including green, yellow, grey, and black. However, the gratings can be customized to match the required colors. Some manufacturers may offer color options that match RAL codes, allowing customers to choose their desired colors.
6. Installation
GRP gratings are relatively easy to install, and require minimal maintenance. They are lightweight and easy to handle, making them ideal for applications that require workers to carry and install the gratings manually. GRP gratings can be cut to size in the field using a circular saw, and require minimal fasteners to hold them in place.
7. Benefits of GRP Molded Gratings
GRP molded gratings have numerous advantages over traditional gratings. These benefits include:
i. Corrosion-resistant: GRP gratings are resistant to corrosion due to their material composition, making them ideal for harsh environments.
ii. Lightweight and easy to handle: GRP gratings are 70% lighter than steel and require fewer workers to install, reducing installation costs.
iii. Durable and long-lasting: GRP gratings are designed to last long and require minimal maintenance, reducing downtime and repair costs.
iv. Non-conductive: GRP gratings provide insulation against electricity and is ideal for electrical installations.
v. Anti-slip surface: Gritted surfaces of GRP gratings provide excellent slip resistance, making them ideal for areas prone to spills.
8. Factors to Consider when Selecting GRP Molded Gratings
When selecting GRP molded gratings, several factors should be considered, such as the load capacity, application environment, and safety requirements. Other factors that should be evaluated include the chemical resistance requirements, location of the installation site, and the intended purpose of the gratings.
Conclusion
GRP molded gratings are versatile, durable, and ideal for a wide range of industrial, commercial, and residential applications. Their technical specifications, including material composition, size, load capacity, surface types, and panel colors make them a popular choice for areas that require a low-maintenance, corrosion-resistant, and lightweight alternative to traditional gratings. For those in need, select a reliable supplier to provide you with quality GRP molded gratings.