... .7x12.7mm,25.4x25.4mm,40x40mm,50x50mm etcIntroduction:Fiberglass geogrids are composed of fiberglass yarn and coated with Bitmen,PVC ... and alkali-resistance. Compared to traditional use of fiberglass geogrids can reduce construction costs,extend road service life,and prevent ... reinforce roadbeds in soft soil for railways,and water dams.Geogrids woven by Dornier Weaving machines,coated with Bitmen,PVC, ...