Square ductile cast iron tree grating, the use of ductile cast iron process, corrosion resistance, acid and alkali resistance, long service life. The square ductile cast iron tree grating is a combination of 4 pieces of grating, easy to remove, install and maintain. The square ductile cast iron tree grating protects the roots without interfering with watering. It is beautiful and generous in appearance, both practical and beautiful, both. Our company can customize different sizes and patterns of square ductile cast iron tree grating.