Marine steel plates are divided into general strength steel and high strength steel, general strength steel according to the quality of A, B, D and E four grades;
High strength steel is divided into two strength grades and three quality grades;
AH32, DH32, EH32,AH36, DH36, EH36.
Marine steel plates of four steel grades A, B, D and E are classified according to Mn content.
Three standards for Marine steel plates: Classification of Marine steel plates in "Marine Structural Steel" GB 712-2000.
CB/T 3580-94 "Technical Requirements for Thickness Measurement of Marine Steel Sheet and Construction Repair" mainly introduces the repair of steel sheet and thickness measurement standards.
GB/T 3432-92 introduces the matching of thickness, length, width and weight of various types of ship steel plates.
