PVC 2729 Sewer Pipe is for sewer and storm drainage applications only. It is used in gravity fed waste elimination systems. Highly resistant to chemicals commonly found in sewage and industrial waste. Perforated PVC 2729 Sewer Pipe is commonly used in leach fields and French drain applications. Two rows of 1/2 In. diameter holes every five inches. Rows are parallel to the pipe axis and are 120 Deg. apart. Conforms to ASTM-D-2729 specifications.