Glass fiber reinforced plastic tree pit cover, commonly known as tree guard, tree pit lid, etc., is a composite material product used for tree pit protection.
　　Here is its detailed introduction:
　　Product structure：The main body of the tree pit cover is usually composed of two or four symmetrical plates connected together. A tree hole is set in the center of the格栅 body, and multiple drainage holes are set around the tree hole. This structure is conducive to the ventilation and water permeability of the tree roots, and can quickly discharge surface water.
　　Material characteristics：Made of glass fiber reinforced plastic material, it has the characteristics of acid and alkali resistance, corrosion resistance, and no rust. It can be stably used in extreme environments from - 50℃ to 120℃, and has a service life of more than 20 years. Its surface is treated with sanding or pattern, which has anti-skid performance and ensures the safety of pedestrians.
　　Specifications and dimensions：Common specifications include 25 specifications (383825mm), 30 specifications (383830mm), 38 specifications (383838mm), and 50 specifications (505050mm). The full size of the plate includes 1.223.66m, 1.222.44m, 1*4m and so on. It can be cut according to the size of the tree pit.
　　Product color：The color is diverse, the commonly used ones are red, black, gray, yellow, green, etc., which can be made by mixing color paste into all resin. The color is bright and does not fade, which is convenient for urban color design, and there is no reflection pollution.
　　Product function：It can keep the soil of the tree roots loose, promote the absorption of water and other nutrients by the trees, reduce water and soil loss; it is convenient for manual watering, improve labor efficiency, reduce labor intensity; its color is diverse and neat, which can play a role in beautifying the environment; it can also withstand the pressure of pedestrians and small vehicles, and protect the roots of trees.
　　Installation method：Before installation, it is necessary to accurately measure the size of the tree pit and the diameter of the tree. When cutting the grid, keep the cutting surface parallel to the horizontal plane, and reserve gaps between the edge and the pool wall as well as space for tree diameter growth. After leveling the ground of the tree pit, place bricks at the edge of the pit and at the junction of the grille to prevent shaking, and finally fix them with stainless steel fasteners.