... ,45,50,GB/T711-2008S45C,S50C,S55CJIS G4051:20053High strength low-alloy structural steelsQ345-Q460-Q550-Q690GB1591-2008A36,A283,A529ASTMSM400,SM490 ... :900-4800I:3000-2500012MnNiMoVDR,SPV450,SPV4908Low alloy steel plates for low temperature pressure vesselsH:6-120W:900-4800I:3000-2500016MnDR,15MnNiDR,09MnNIDRGB3531 ...