Advanced Drainage Systems is the world's largest producer of corrugated HDPE pipe and related drainage products. ADS serves the storm and waste water industry through a global network of 56 domestic and international manufacturing plants and 27 distribution centers. In addition to its flagship N-12 pipe, the company offers a complete line of fittings and other accessories including, Nyloplast drainage structures, and various geotextiles ADS Triple wall has been designed to provide customers with an HDPE alternative to PVC D-2729 or Thin Wall Pipe and it meets or exceeds many of the requirements for PVC 27/29, per ASTM D 2729. Color: Black.