The national standard of the composite geo-membrane is GB／T17642－2008. The composite geo-membrane produced according to the technical requirements of the national standards is the national standard composite geo-membrane.
That is to say the product quality geomembrane should reach the national standard.
The national stantdard of composite geo-membrane is GB／T17642－2008. The following specifications must be qualified with the international standards of composite geo-membrane: 1. The vertical and horizonal breaking strength 2. The normal intensity of the vertical and horizonal elongation. 3. The CBR bursting?strength 4. The vertical and horizonal tearing strength 5. The resistance to static water pressure. 6. The peel?strength 7. The vertical permeability index 8. The width?deviation
