the standard of steel for shipbuilding

What is the standard of steel for shipbuilding ?Product specifications: thickness of 4.5-50mm, width 1.0-2.2 mm, length 4.0-12.0 m. Our country is mainly produced by wu gang, ma steel, shanggang one, three factories, taisteel, kunming steel company and tianjin steel plant. 2. The hull is divided into two types of structural steel and high strength steel, and the general strength steel is divided into four grades: A, B, C and D; High strength steel is divided into two strength levels and three quality grades. AH32, DH32, EH32, AH36, DH36, EH36. The steel plate is mainly used to make steel plates for the ships of ocean-going, coastal and inland waterways. , ---------------------------- Shipbuilding steel plate refers to the thin steel plates and thick steel plates used to make the ships of the ocean-going, coastal and inland waterways used in shipbuilding special structural steel. Steel sheets and plates for shipbuilding Structural steel for shipbuilding includes carbon steel and low alloy steel, with C (ship) at the end of the steel. Carbon steel has 2C, 3C, 4C and 5C, and low alloy steel has 12MnC, 16MnC, 15MnTiC, 14MnVTiReC, etc. The thickness is 2.5~50 mm url:http://www.gneesteels.com