Drainage pipes are tubes designed to carry excess water away from areas where it can cause problems, such as basements, roads, and agricultural fields. They help prevent flooding and water damage by directing water to appropriate drainage systems or natural bodies of water. These pipes can be made from various materials, including PVC, clay, and metal, and come in different sizes depending on their intended use. Proper installation and maintenance of drainage pipes are essential to ensure they function effectively and prevent blockages that could lead to water accumulation.