According to different parts and functional requirements, the hull structure requires the use of steel with different strength and corrosion resistance properties. It mainly includes the following aspects:
(1) Rolled plate: mainly used for large-area structure such as bottom plate and deck, with high strength and good toughness.
(2) Section steel: mainly used for hull frames, supports and connecting parts with high strength and stiffness.
(3) Welding steel: used for welding various connecting parts of hull structure, with good welding performance and corrosion resistance.
(4) Corrosion-resistant steel: mainly used for underwater parts of the hull, such as the bottom of the ship, rudder blade, etc., with excellent corrosion resistance.
(5) Special steel: such as high-strength steel, wear-resistant steel, etc., for specific occasions and functional needs, can improve the strength and durability of the hull structure.
