Geosynthetic Institute GRI 475 Kedron Avenue GEI GII ...
GRI - GM13 Standard Specification* Standard Specification for ... 1.1 This specification covers high density polyethylene (HDPE) geomembranes with a formulated sheet density of 0.940 g/ml, or higher, in the thickness range of 0.75 ... adopted ASTM D 6693 (in place of D 638), this GRI Specification followed accordingly. The difference is that D ...
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