Pacific Corrugated Pipes HDPE product line is a heavy-duty pipe for storm sewers, culverts, storm water storage and water quality applications. Our HDPE load-bearing capacity is comparable to that of concrete (RCP) or metal pipes. In addition, corrugated HDPE pipe is lightweight, flexible and highly resistant to corrosion and abrasion. All Pacific Corrugated HDPE pipe are marked with the relevant AASHTO and ASTM applicable standards to which they conform so that purchasers can clearly understand the quality and grade of materials being provided. Listed below are the AASHTO and ASTM specifications that are adhered to on all Pacific Corrugated HDPE Pipe and commonly used within the corrugated HDPE pipe industry. Specifications can have multiple editions and are revised from time to time. The markings on our HDPE pipe products indicates conformance to the latest edition and revisions of such standards as of the date of production.