... 4m china engineering safety first brand Unit weight 4000 g/m2 gcl bentonite watertopSpecificationUnit weight ≥4000gsm,width of 4-6mCharacteristicsCompared with ... clay liner ,it has the advantages of small size,light weight ,good flexibility and sea easy for construction and suitable for ... .6Mpa,1h,no leakage0.6Mpa,1h0.6mpa,1h,noleakageml fulid loss ≤ 18≤ 18≤ 18Durability of bemonite(Ml/2g) ≥ 20≥ 20≥ ...