GSI not only provides you with the best grain storage and drying products available, we also manufacture and market a line of grain and feed conveying equipment.For larger scale grain handling, rigid augers, drag conveyors. A world leader in steel corrugated grain storage bin manufacturing, GSI offers the strongest and heaviest gauge storage tanks in the industry with capacities up to 1.1 million bushels. Our tank sidewall is roll-formed at the GSI plant using 8 gauge, and now 5 and 6 gauge, prime high tensile steel up to 65,000 PSI (450 MPa). The heavier 5 gauge sidewall allows us to provide taller tanks with our advanced design, compared to other manufacturers who provide 8 gauge as their maximum thickness.