Grades of Alloy Structural Steel
Alloy structural steel grades include: Q345, Q390, 45Mn2, 15Cr, 20cr, 25Cr, 30Cr, 35Cr, 40Cr, 20crMnTi, 20crNiMo, 30CrMnSiA, 38CrMoA1, 42CrMoA、20crNiMo2, 25Cr2Mo1VA and so on.
Q345:
It is widely used in construction, bridge and other fields because of its excellent performance. The equivalent of......