HDPE drainage Geomat: 1)Polyethylene (HDPE) 2)Tensile strength:0.8~3 ... -480g/m2 4)thickness:10~20mm HDPE drainage Geomat is a king of 3D structural geosynthetic,which is applied to keep the water ... ,river-way,dyke,and the hillside,etc.Specification of the 3D Geomat: Item SpecEM2EM3EM4EM5Weight per sq.m. ≥(g/sq.m) ... be manufactured according to the demands of the contract. HDPE drainage Geomat