The general-strength structural steel of the China Classification Society's code is divided into four quality levels: A, B, D, and E; the high-strength structural steel of the China Classification Society's code is three strength levels and four quality levels.
A32 |
A36 |
A40 |
D32 |
D36 |
D40 |
E32 |
E36 |
E40 |
F42 |
F36 |
F40 |
According to the minimum yield point of structural steel for hull, the strength levels are divided into general strength structural steel and high strength structural steel. There are two types of structural steel for hulls: general strength and high strength steel. General strength steel is divided into four grades of A, B, D and E according to quality; high strength steel is divided into two strength grades and three quality grades; AH32, DH32, EH32, AH36, DH36, EH36.