National Pipe's water products are manufactured to meet the requirements of AWWA C900-16 for water pipe. All of our products meet rigorous internal standards for tolerances, dimensions and materials to ensure worry-free installation in demanding work environments. This standard was updated August 1, 2016, and includes our larger diameter water pipe.
DURA-FLOW SDR Series
All pipe shall meet the requirements of ASTM Standard D-2241. Pipe supplied with a solvent cement joint shall meet the requirements of ASTM D-2672. Pipe supplied with a gasketed joint shall meet the requirements of ASTM D-3139, and the joint gasket shall conform to the requirements of ASTM F-477.