A.AH36、DH32、DH36、EH36、EH32、
D40、E40、2HCr50
12-150mm *1500-4000 * 6000-18000mm
ship plate
worksheet
and
plate
for
build a ship
Shipbuilding steel plate refers to the thin steel plate and thick steel plate produced by special structural steel for shipbuilding, which are used to manufacture the hull structure of ships sailing in the ocean, coastal areas and inland rivers.
Structural steel for shipbuilding includes carbon steel and low alloy steel, and the end of the steel number is marked with C (Ship).
Carbon steel is 2C, 3C, 4C and 5C, and low alloy steel is 12MnC, 16MnC, 15MnTiC, 14MnVTiReC. The thickness is 2.5~50 mm.
Steel plate for hull structure (GB7 12-88)
Steel plate for hull structure is called marine steel plate for short. Due to the harsh working environment of ships, the hull is corroded by chemical corrosion, electrochemical corrosion and marine organisms and microorganisms. The hull bears large wind and wave impact and alternating load; The shape of the ship makes its processing method complicated, so the requirements for steel for hull structure are strict. First of all, good toughness is the most critical requirement. In addition, it also requires high strength, good corrosion resistance, weldability, processability and surface quality. In order to ensure the quality and sufficient toughness, the Mn/C of chemical composition is required to be above 2.5, and the carbon equivalent is also strictly required, and it is produced by a steel mill recognized by the ship inspection department. There are two types of hull structural steel: ordinary thickness steel and high strength steel. General strength steel is divided into four grades according to quality: A, B, C and D; High strength steel is divided into two strength grades and three quality grades; AH32、DH32、EH32、AH36、DH36、EH36。
Steel plates for hull structure are mainly used to manufacture steel plates for hull and deck of marine, coastal and inland transport ships. Product specifications: the thickness is 4.5-50mm, the width is 1.0-2.2mm, and the length is 4.0-12.0m. China is mainly produced by WISCO, Masteel, No.1 and No.3 Plant of Shanghai Steel, Taigang, Kungang and Tiangang.