... steels20,45,50,GB/T711-2008S45C,S50C,S55CJIS G4051:20053High strength low-alloy structural steelsQ345-Q460-Q550-Q690GB1591-2008A36,A283,A529ASTMSM400 ... G3119,JIS G3115,JIS G3126,EN 100287Quenched and tempered high strength steel plates for pressure vesselsH:12-60W:900-4800I:3000 ... X56,X60,X65,X70,X80,X100API spec 5L-2004 4311High strength structural steel plates in the quenched and tempered conditionH:5 ...