Off-Grade HDPE (High-Density Polyethylene) granules are non-prime plastic raw materials that deviate from strict manufacturer specifications (like inconsistent Melt Flow Index or color) but retain high durability and chemical resistance. These cost-effective granules are often sourced from surplus production, industrial scraps, or plant transitions rather than post-consumer waste, making them ideal for non-food applications like piping, industrial crates, and blow molding.