HDPE Geomat 1)Polyethylene (HDPE) 2)Tensile strength:0.8~3.5kn/m 3)Weight:220-480g/m2 4)Thickness10~20mm Jiizhou ZhongJie ... , avoiding sea water erosion and adopting sea waves attacking energy.3) Can be made rectangular, square or tube stone cage and ... )±2(8×6)±2(27×27)±3(22×22)±3(74×74)±3Thickness (mm)2.9±0.33.3±0.35.2±0.54.8 ...