... tensile strength 2. excellent waterproof, anti-seepage fonction HDPE Geomembrane/liner Introduction:HDPE sheet is one of a geosynthetics. It is ... concrete structures, sewer pipes, tunnels, manholes, chemical tanks, water reservoirs, wall in sewerage installations or civil foundations and other masonry work ... coefficient of thermal expansion, flexibility;8. Migration resistance. HDPE Geomembrane/liner