... Japa HDPE geomembrane of double rough surfaceHDPE has excellent property of temperature adaptability,weldability, ... material,particaulary suitable for the construction of underground,mining,landfill,sewage or ... of technical specification Item Tensile strength MpaElongation%Friction coefficientTraditional rough geomembrane 111000.4HDPE anti-skid point geomembrane 283000.8 HDPE geomembrane of double ...