Material Concrete Brand Silicon Precast Color Grey Product Type Box Culvert Shape Rectangular Thickness 60mm Features: Made from high-strength reinforced precast concrete for durability and long life Standard 60mm wall thickness, suitable for small to medium water drainage and sewage applications Box-shaped design ensures smooth water flow and structural stability Factory-cast panels ensure uniform quality, precise dimensions, and smooth finish Quick and easy installation compared to cast-in-situ culverts Resistant to weathering, corrosion, and chemical exposure