SpecificationsGeosynthetic watercourse Liner (GCL): 1.Easy for construction 2.Unit weight:4.0-5.5kg/Sqm 3.Length:15m,30m (as request) Geosynthetic watercourse Liner (GCL) GCL provides exceptional liquid containment -in reservoirs and irrigation canals, as well as industrial ponds and lagoons, due to its low permeability and high internal shear strength. Natural sodium bentonite Geosynthetic Clay Liner (GCL) Our GCL is composed of 3 layers, the upper layer is nonwoven geotextile, while the lower layer is woven geotextile, natural sodium bentonite fills the gap between geotextile layers. The application with natural sodium bentonite can enlong the using life of construction. Our GCL creates a new green and environmental building material. Technical Parameter:Inspection Item Testing Procedure Technical Index Bentonite mass for unit area ASTMD5993 ≥5.5kg/m2 Expansion coefficient ASTMD5890 ≥ 25mL/2g Low temperature ductility ASTMD5898 No impact at -35°C Thickness ASTMD5892 ≥6.4mm Tensile strength ASTMD4632 ≥6kN Peel strength of concrete face ASTMD4632 ≥3.0 KN/ m2 Peel strength ASTMD4632 ≥600N Indicated flow ASTMD5887 ≤1 × 10-8m3/m2/sec Hydrostatic pressure resistance ASTMD5888 ≥70 Permeability ASTMD5887 ≤5 × 10-11m/sec Extension rate ASTMD5896 ≥20 Puncture strength ASTMD5894 ≥635N Our product advantage: 1. Environment friendly 2. Long-lasting waterproof performance 3. Easy application Renzhong Advantage1. Excellent raw material We choose the best natural sodium bentonite to guarantee our good quality. 2. Competitive price Our advanced production line, quality control and analysis system and convenient transportation to shanghai port help us the reduce cost, so that we can provide you competitive price. 3. First-class service and product “Quality first, customer is god. ”is our doctrine. We will serve for our customer w