... weight of steel ingot is 60 ton High strength structural steel plates in the quenched and ... GB/T711-2008S45C,S50C,S55CJIS G4051:20053High strength low-alloy structural steelsQ345-Q460-Q550-Q690GB1591 ... G3115,JIS G3126,EN 100287Quenched and tempered high strength steel plates for pressure vesselsH:12-60W ... 4800I:3000-2500020MnTiB,N,360,NM400 High strength structural steel plates in the quenched and ...