Corrugated Drainage Pipe (Perforated) Aysan Boru offers reliable solutions for underground and surface drainage applications with its corrugated drainage pipes manufactured from high-quality HDPE material. Our perforated pipe systems stand out as an ideal solution for controlling excess and surface water. Our product is supported by advanced engineering solutions and manufactured in accordance with relevant standards. Thanks to the holes drilled at specific intervals on the rib structure, it allows water to be collected in a controlled manner and directed to the desired area.