... , Mining Grid, Mining Geogrid, Polyester Geogrid Manufacturers.Mine Grid 600kN/m for longwall recovery roof support system,got Russia,USA,Australia ... tensile strengths of between 20 kN/m and 800 kN/m. Ultimate strengths over 1000 kN/m can be supplied for special applications ... ,400-400kN,600-400kN,600-600kN,800-800kN,1000-1000kN/m.All Products can design to product and customized.Mine Grid ...