... weight of steel ingot is 60 ton High strength structural steel plates in the quenched and tempered condition is our best Superior products ... ,JIS G3103,JIS G3119,JIS G3115,JIS G3126,EN 100287Quenched and tempered high strength steel plates for pressure vesselsH:12-60W:900 ... H:5-150W:900-4800I:3000-2500020MnTiB,N,360,NM400 High strength structural steel plates in the quenched and tempered condition