FRP gratings are divided into two categories: SMC molded combined grille and hand-formed grille. According to the analysis of Beijing Health and Epidemic Prevention Station, SMC molded combined grille has the best water quality (better than stainless steel grille), and it is easy to assemble. The largest in China has reached 1,260 cubic meters.

The future development trend of FRP gratings is:

First, the lesson is to learn from the grille in Taiwan Province. In the last century, Taiwan's FRP grating was popular. After the industry cut corners and the quality was not good, it gradually withdrew from the market, mostly replaced by stainless steel grille. In contrast, in Japan, the stainless steel grille is no match for the FRP grating, and almost 100% of the grille used in Japan is FRP. Second, the grid veneer is excessive from the traditional 1×1m to 2×1m. There are two reasons: the installation time is saved, and the cost of the unit board is also reduced.

Third, thermoplastic FRP has a series of advantages such as physical change, no pollution, easy recycling, low density and good impact toughness. GMT (Glass Mat Reinforced Thermoplastics) sheet is produced in China. With its molding, the production efficiency is several times higher than that of SMC (the holding time is only about 1 minute). It has been used as a container abroad, and its working conditions are worse than those of the grille. SMC is not easy to recycle. Therefore, from the perspective of environmental protection and recycling economy, FRTP should also be used. The original presses and molds can be used, and only one heating oven (preheating GMT sheet) can be added.

Fourth, the development of series of products: the use of FRP corrosion-resistant characteristics, adjustment of SMC raw material formula, can produce chemical storage tanks, electroplating tanks, with the advantages of easy installation, can create camp swimming pool, guard room and other facilities. For large tanks, draw the rods to choose corrosion resistance and materials..