... , Mining Grid, Mining Geogrid, Polyester Geogrid Manufacturers.Mine Grid 600kN/m for longwall recovery roof support system,got Russia,USA,Australia ... FRAS,CE,ISO9001,GOST R certificate.Mine Grid Basic Info:Mine Grid are manufactured from ... tensile strengths of between 20 kN/m and 800 kN/m. Ultimate strengths over 1000 kN/m can be supplied for special applications ...