... Grid 600kN/m for longwall recovery roof support system,got Russia,USA,Australia FRAS,CE,ISO9001,GOST ... of between 20 kN/m and 800 kN/m. Ultimate strengths over 1000 kN/m can be supplied ... High tensile strength at low elongation 2. Low tendency to creep 3. Optimized grid structure 4. Excellent pull- ... 400kN,600-400kN,600-600kN,800-800kN,1000-1000kN/m.All Products can design to product and customized.Mine ...