thin hdpe plate 12mm price-HDPE high density polyethylene Sep 06, 2012 · High Density Polyethylene Sheet: 10mm to 30mm thick. On this page you can buy High Density Polyethylene, also referred to as HDPE or PE300, in full sheets and custom cut pieces in 10mm, 12mm, 15mm, 20mm, 25mm and 30mm thick. smooth 12mm two []