New Heavy Duty dual wall culverts. Made with pride in Oklahoma! Many sizes and lengths available. When it comes to reliable and environmentally friendly piping solutions, Century Products USA stands out as a premier provider of High-Density Polyethylene (HDPE) Corrugated Pipe. Our HDPE Corrugated Pipe is manufactured using high-density polyethylene resin that complies with the rigorous requirements of cell classification outlined in ASTM D3350, ensuring a top-tier product that meets the highest standards in the industry. Prices in Pics